Претрага
890 items
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Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels
Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković. "Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels" in SPE Journal (2023)
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Long-Term Planning Methodology for Improving Wood Biomass utilization
Vukašinović V., Gordić D., Živković Marija, Končalović D., Živković D.. "Long-Term Planning Methodology for Improving Wood Biomass utilization" in 3rd South East European conference on sustainable development of energy, water and environment systems (2018): 66
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Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization
D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović (2020)D. R. Ivanović, Dj. A Valjarević, R. D. Srećković-Batoćanin, N. M. Martić-Bursać, D. Ž. Vukoičić, R. M. Ivanović. "Hydrogeothermal potentials of Rogozna mountain and possibility of their valorization" in Open Geosciences, Walter de Gruyter GmbH (2020). https://doi.org/10.1515/geo-2019-0083
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Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду
... Ć M., POLOVINA D., IGNJATOVIĆ D., JOVANČIĆ P., 2012: Lost production costs of the overburden excavation system caused by rubber belt failure. Eksploatacja i Niezawodnosc – Maintenance and Reliability, 14 (4), 333–341. TANASIJEVIĆ M., IVEZIĆ D., JOVANČIĆ P., ĆATIĆ D., ZLATANOVIĆ D., 2013: Study ...
... GRUJIĆ M., IVEZIĆ D., ŽIVKOVIĆ M., 2014: Application of multi-criteria decision- making model for choice of the optimal solution for meeting heat demand in the centralized supply system in Belgrade. Energy, 67, 341–350. TANASIJEVIĆ M., IVEZIĆ D., JOVANČIĆ P., ĆATIĆ D., ZLATANOVIĆ D., 2013: Study of ...
... 243. Kostić S., Vasović N., Perc M., Toljić M., Nikolić D.: Stochastic nature of earthquake ground motion, Physica A: Statistical Mechanics and its Ap- plications, 2013. 244. Tanasijević M., Ivezić D., Jovančić P., Ćatić D., Zlatanović D.: Study of Dependability Evaluation for Multi-hierarchical ...главни и одговорни уредник Душан Поломчић. Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2016
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A Fuzzy Expert Model for Availability Evaluation
Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...... , the proposed model could be implemented to other engineering systems or products. REFERENCES [1] Tanasijević M., Ivezić D., Jovančić P., Ćatić D., Zlatanović D., Study of Dependability Evaluation for Multi-hierarchical Systems Based on Max–Min Composition, Quality and Reliability Engineering ...
... are: R(D-Lib.) = 0.06/exc,0.62/good,0.32/avr; M(D-Lib.) = 0.56/good,0.44/avr; S(D-Lib.) = 0.4/good,0.3/aver,0.3/adeq; R(D-Drs.) = 0.34/good,0.56/aver,0.1/adeq; M(D-Drs.) = 0.12/good,0.68/aver,0.2/adeq; S(D-Drs.) = 0.56/aver,0.44/adeq; R(D-Cat.) = 0.52/exc,0.4/good,0.08/avr; M(D-Cat.) = ...
... of A of machine Liebherr-D in form: μA(Lib-D) = (0, 0.11, 0.475, 0.475, 0.14) E. Final Exam and Identification Best-fit method [1] and proposed A fuzzy set give the final availability assessment for the machine Liebherr-D: ⸹1(A(Lib-D), exc) = [S5 j=1 (µj A(Lib-D) - µj exc)]0.5 = [ (0-0)2 ...Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić. "A Fuzzy Expert Model for Availability Evaluation" in Proceedings of the 2019 20th International Carpathian Control Conference (ICCC), AGH University of Science and Technology, Kraków - Wieliczka, Poland (2019)
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Geotehnički uslovi izgradnje metro stanice "Francuska" u Beogradu
Lazar Pavlović (2024)Cilj ovog rada je analiza stabilnosti dijafragme, predviđene kao mere za obezbeđenje dubokog iskopa od zarušavanja okolnog tla koji se izvodi na mestu buduće metro stanice “Francuska” koja je planirana u okviru prve faze, prve linije metroa u Beogradu – sekcije „Centar“. U okviru numeričke analize je izvršena analiza stabilnosti konzolne dijafragme kao i dijafragme sa ankerom – slobodno oslonjene dijafragme, kako bi se moglo napraviti poređenje dobijenih vrednosti koje se odnose na dubinu fundiranja koja je potrebna da ...... das=D+hMh+ D +11 +—= D + 11 + 2.25 = D + 13.25 m = 48.9835 + 13.25 62.23m Eae = ' (oyk – ofđp) · ha = x (103.68 — 57.87) · 4.5 = 0.5 · 45.81 · 4.5 = 103.07 k\/m de=D+h,}+ D +11 +—= D + 11+ 1.5 = D + 12.5 m= 48.9835 + 12.5 61.48m Eay = o · ha = 100.52 · 11 = 1105.72 kN/m! day = D + * = D ...
... + Eao · dao + Eaio ' daio – Epi 'dpi – Epa ' dpy =0 52.78 · (D + 19.75) + 171.53 · (D + 18.67) + 50 · (D + 16) + 5.15 · (D + 15.83) + 260.41 · (D + 13.25) + 103.07 · (D + 12.5) + 1105.72 · (D + 5.5) + 606.92 · (D + 3.67) + 159D · (D) +4.16D? · (g) — 52.85 · (9) — 10.84Dp? · (%) =0 2 2 52.78D ...
... dobija: + D.,=1.2· D=1.2·48.9835 = 58.78m 65 d, =2 4. 49 m =1 6. 33 m Skica 2. Dijagram aktivnih i pasivnih pritisaka koji deluju na konzolnu dijafragmu 66 dg =2 4. 49 m d, a= 52 .6 5m da 7= 54 .4 8m d„ =6 1, 48 m d, .= 62 .2 3m d„ =6 4. 81 m d, a= 64 .9 8m d, =6 7. ...Lazar Pavlović. Geotehnički uslovi izgradnje metro stanice "Francuska" u Beogradu, 2024
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A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers
Effectiveness evaluation is one of the basic components of engineering asset management and maintenance engineering in general. Effectiveness is an overall concept representing a measurement of quality of service level for the analyzed engineering system. This concept contains a series of partial indicators relating to time in operation and time for maintenance activities, as well as functional properties of the system. This article describes the analysis and structuring of partial indicators, as well as the development of a model ...Miloš Tanasijević, Predrag Jovančić, Dejan Ivezić, Uglješa Bugarić, Radiša Đurić. "A fuzzy-based decision support model for effectiveness evaluation - a case study of examination of bulldozers" in International Journal of Industrial Engineering: Theory, Applications and Practice (2019)
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Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation
kontinentalna tektonika: kompresija, kontinentalna tektonika: ekstenzija, kontinentalna tektonika: transkurentni i transformni rasedi, pukotine, rasedi, zone snažnih deformacija, kinematika deformacija kore i omotača, teorijska mehanika, modelovanje... 1997): lnV = 2 ∑ i=1 (lnλi )ni ⊗ ni (46) D o w n lo a d e d fro m h ttp s ://a c a d e m ic .o u p .c o m /g ji/a rtic le /2 2 6 /2 /9 8 4 /6 1 9 5 5 2 9 b y g u e s t o n 1 9 J u ly 2 0 2 1 996 T. Broerse et al. finite strain: d - | Hencky strain: In(A) 1.57 =a = © 1 7 ...
... becomes: [ δux δu y ] = Q [ 0 d ] + Q [ x y ] − [ x y ] , (50) where the first term represents the rotated shear displacements, and the last two terms combined are the rotation contribution. Fig. 9 shows the D o w n lo a d e d fro m h ttp s ://a c a d e m ic .o u p .c o m /g ji/a ...
... l deformation and that described by F the elements should be chosen sufficiently small. A P P E N D I X B : P O L A R D E C O M P O S I T I O N O F T H E D E F O R M AT I O N G R A D I E N T I N 2 D Analytic solutions exist for the decomposition of the deformation gradient F into the rotation tensor ...Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer. "Mapping and classifying large deformation from digital imagery: application to analogue models of lithosphere deformation" in Geophysical Journal International, Oxford University Press (OUP) (2021). https://doi.org/10.1093/gji/ggab120
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Fizičko-geografske karakteristike vulkana Teide na Kanarskim ostrvima
Radovanović D., Srećković -Batoćanin D., Valjarević A., Ivanović R., Veselinović J.. "Fizičko-geografske karakteristike vulkana Teide na Kanarskim ostrvima" in 4. Srpski Kongres geografa, Kopaonik 7-9.oktobar (2015)
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Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints
Emő Márton, Vesna Cvetkov, Miodrag Banješević, Gábor Imre, Aleksandar Pačevski. "Tectonic evolution of the Circum-Moesian orocline of the Carpatho-Balkanides: Paleomagnetic constraints" in Journal of Geodynamics, Elsevier BV (2024). https://doi.org/10.1016/j.jog.2024.102058
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Primena backcasting metodologije pri dugoročnom planiranju korišćenja biomase
Vukašinović V., Gordić D., Živković Marija, Živković D., Josijević M., Jurišević N.. "Primena backcasting metodologije pri dugoročnom planiranju korišćenja biomase" in Energija 20 no. 01-Feb (2018): 563-571
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Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)
M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić. "Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)" in International Journal of Coal Geology, Elsevier BV (2020). https://doi.org/10.1016/j.coal.2020.103411
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Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides
Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor (2019)Internal Dinarides, Drina-Ivanjica thrust sheet, Deformation history, K–Ar dating, Obduction, Structural analysis... Contrary to the D, deformation phase that only affected the Paleozoic and Northem Triassic unit of the Drina- Ivanjica thrust sheet, D> deformation phase has also affected the Albian-Campanian transgressive succession providing further evidence for the timing of D, and D» events. As shown ...
... asymmetry of F, folds suggests top-WNW tec- tonic transport direction for D, phase. Transposition by solution and neo-crystallization of So„ bedding due to intense D, deformation was frequently observed (Fig. 3). Structures of D, phase were not observed neither in the Southern Triassic unit which ...
... the Paleozoic basement all the way to the Upper Cretaceous (Fig. 2a). The trend of F» fold axes and D» thrusts implies a NE-SW shortening direction for the D> phase (Fig. 2c). The vergence of D» thrusts and asymmetric F. folds are top-SW in the NE part of the study area, but top-NE in the SW ...Kristof Porkoláb, Szilvia Kövér, Zsolt Benkó, Gabor Héja, Melinda Fialowski, Balázs Soós, Nataša Gerzina Spajić, Nevenka Đerić, László Fodor. "Structural and geochronological constraints from the Drina-Ivanjica thrust sheet (Western Serbia): implications for the Cretaceous–Paleogene tectonics of the Internal Dinarides" in Swiss Journal of Geosciences (2019)
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... Ratković J., Polomčić D., Bajić D., Hajdin B. FILIPOVIĆ, I. et al. (1976) National geological map of Serbia, scale 1:100,000, Obrenovac section (L 34-125). Belgrade: Geological, Hydrogeological, Geophysical and Geotechnical Research Institute - Geozavod. JAGODIĆ KRUNIĆ, D. and JOVIČIĆ, V. (2007) ...
... Belgrade: Yugoslav Opencast Mining Committee, pp. 259-266. POLOMČIĆ, D. et al. (2013b) Hydrodynamic characteristics of water supply source „Peštan“ (Lazarevac, Serbia). Vodoprivreda, 45, pp. 55-68. POLOMČIĆ, D., BAJIĆ, D. and ILIĆ, Z. (2014) Implementation of alternative forecasting hydrodynamic ...
... 293-300. 54 Ratković J., Polomčić D., Bajić D., Hajdin B. THE AMERICAN SOCIETY FOR TESTING AND MATERIALS (2016) Available from: http://www.astm.org/DATABASE.CART/WITHDRAWN/D5447.htm [Acessed 23/11/16]. ŠUBARANOVIĆ, T., PAVLOVIĆ, V. and POLOMČIĆ, D. (2013) Influence on environment of sealing ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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O mogućnosti proizvodnog reaktiviranja ležišta cementnih laporaca Ralja kod Beograda
Ilić M., Kričak Lazar, Jagodić-Krunić D., Podunavac D.. "O mogućnosti proizvodnog reaktiviranja ležišta cementnih laporaca Ralja kod Beograda" in Zbornik radova XI Međunarodne Konferencije o površinskoj eksploataciji - OMC 2014, Zlatibor,Srbija:Jugoslovenski komitet za površinsku eksploataciju,Savez inženjera rudarstva i geologije Srbije (2014): 103-111
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Application of pulsed flash thermography method for specific defect estimation in aluminum
Tomić Ljubiša D, Jovanović Dalibor B, Karkalić Radovan M, Damnjanović Vesna, Kovačević Branko V, Filipović Dalibor D, Radaković Sonja S. (2015)Tomić Ljubiša D, Jovanović Dalibor B, Karkalić Radovan M, Damnjanović Vesna, Kovačević Branko V, Filipović Dalibor D, Radaković Sonja S.. "Application of pulsed flash thermography method for specific defect estimation in aluminum" in Thermal Science 19 no. 5, Belgrade:Vinca Institute of Nuclear Sciences (2015): 1845-1854
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Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)
... deformation stages D, and D, resulted in the formation of folded drawn boudin trains in Ordovician meta-argillites (Fig. 11). The boudin trains were initially formed in the extensional domain of D, strain ellipsoid and were subse- quently folded by simple shearing during D, (Fig. 11b). Spaced ...
... order. Variscan Orogeny First deformation stage D, Evidence of deformation stage D, is generally scarce, as the resulting structures have been strongly overprinted during the subsequent deformation stage D,. Structures formed during D, were documented in both the Lower Complex (e.g. Fig ...
... constraining a maximum age of D, to the lower Emsian (ca. 408 + 3 Ma; Cohen et al. 2013). Mini- mum age constraints on D, could not be clearly defined, but it certainly predates the onset of the deformation stage D, which is discussed below. Second deformation stage D, Penetrative foliation S» ...Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel. "Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)" in International Journal of Earth Sciences, Springer Science and Business Media LLC (2016). https://doi.org/10.1007/s00531-016-1380-6
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Mineragenija i potencijalnost karbonatnih sirovina rudnog reona Bjelopavlića (Crna Gora)
Darko M. Božović (2016-09-28)Karbonatne sirovine, obzirom na geološku građu Crne Gore predstavljaju jednu od najznačajnijih nemetaličnih mineralnih sirovina. U Crnoj Gori postoje brojna leţišta karbonatnih sirovina (arhitektonsko - građevinskog i tehničko - građevinskog kamena) koja su istraţena ili su u eksploataciji, među kojima rudni reon Bjelopavlića zauzima najznačajnije mjesto.Dosadašnja istraţivanja karbonatnih sirovina na ovom području imala su, međutim, prevashodno uzak istraţivački cilj, utvrđivanje rezervi arhitektonsko - građevinskog i tehničko - građevinskog kamena određenog leţišta, ili preliminarna ispitivanja kvaliteta krečnjaka u njima, sa ...karbonatne mineralne sirovine, arhitektonsko - građevinski kamen, tehničko - građevinski kamen, karbonatna punila, rudni reon Bjelopavlića, potencijalnost.... 46 pp. Radulović, D., Boţović, D., Mihailović, S., 2015: Krečnjak iz leţišta “Maljat” - Danilovgrad, potencijalna sirovina za dobijanje punioca. Geološki glasnik, knj. XVI. JU Zavod za geološka istraţivanja Crne Gore, 163-171 str., Podgorica. Radulović, D., Boţović, D., 2015: Upotreba fino ...
... TG DTA e n d o D T A [ V ] Slika 4.1: Termički dijagrami (DTA/TG) uzorka krečnjaka K-1/10 (Klikovače) 0 200 400 600 800 1000 -50 -40 -30 -20 -10 0 e n d o DTA TG (20-1000) o C-43,59% 894 o C 50/10 M-1/09 T [ o C] T G [ % ] -100 -80 -60 -40 -20 0 20 D T A [ V ...
... 0 20 e n d o D T A [ V ] Slika 4.7: Termički dijagrami (DTA/TG) uzorka krečnjaka SL-1/10 (Slatina) 0 200 400 600 800 1000 -50 -40 -30 -20 -10 0 e n d o (20-1000) o C-42,75% 893 o C DTA TG 50/12 J-1/09 T [ o C] T G [ % ] -100 -80 -60 -40 -20 0 20 D T A [ ...Darko M. Božović. "Mineragenija i potencijalnost karbonatnih sirovina rudnog reona Bjelopavlića (Crna Gora)" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-28)
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... C D D D D D D D D x D )D(C D )D(p D )D(p 00000 D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p D )D(p 000 0 D )D(p D )D(p D )D(C 0 D )D(p 00 00 D )D(p 0 D )D(C D )D(p D )D(p 0 000 D )D(p D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p ...
... /3/ 2 /2/ /2/ /2/ 2 /1/ /1/ /1/ 2 1 output6 input5 output3 input2 D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ D D p~ C )Q(D~ 0 )Q(D~ 0 )Q(D~ )Q(D~ 0 V (223) Где се обе матрице, и [NL] и [V] користе у изразу (224): ...
... CLoop CLoop CLoop CLoop D QL D QL D QL8 ppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp = = = = = = = = ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)
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Ефикасност дистрибуције и коришћења природног гаса у домаћинствима
Dejan Brkić (2010-03-30)Природни гас ће се у будућности све више користити као енергент за подмиривање грејних потреба становништва у српским градовима. Стога је потребно изнаћи најповољнији начин употребе природног гаса. Природни гас се може користити за подмирење грејних потреба становништва на два дијаметрално супростављена начина, и то директно, тако што би се гас директно уводио у зграде путем дистрибутивног система за снабдевање гасом и затим сагоревао у гасном котлу којим је сваки стан опремљен (гасни дистрибутивни систем), или индиректно, тако што ...prirоdni gаs, distribuciја gаsа,grејаnjе, cеvоvоdi, cеvоvоdnе mrеžе,fаktоr trеnjа pri prоtоku fluidа,urbаnizаm... C D D D D D D D D x D )D(C D )D(p D )D(p 00000 D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p D )D(p 000 0 D )D(p D )D(p D )D(C 0 D )D(p 00 00 D )D(p 0 D )D(C D )D(p D )D(p 0 000 D )D(p D )D(p D )D(C 0 D )D(p 0000 D )D(p 0 D )D(C D )D(p ...
... /3/ 2 /2/ /2/ /2/ 2 /1/ /1/ /1/ 2 1 output6 input5 output3 input2 D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ C D D p~ D D p~ D D p~ D D p~ D D p~ C )Q(D~ 0 )Q(D~ 0 )Q(D~ )Q(D~ 0 V (223) Где се обе матрице, и [NL] и [V] користе у изразу (224): ...
... CLoop CLoop CLoop CLoop D QL D QL D QL8 ppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL D QL8 pppp D QL D QL D QL8 ppp D QL D QL D QL D QL8 pppp = = = = = = = = ...Dejan Brkić. "Ефикасност дистрибуције и коришћења природног гаса у домаћинствима" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2010-03-30)