Gajica Gordana, Šajnović Aleksandra, Stojanović Ksenija, Kostić Aleksandar, Slipper Ian, Antonijević Milan, Nytoft Hans Peter, Jovančićević Branimir. "Organic geochemical study of the upper layer of Aleksinac oil shale in the Dubrava block, Serbia" in Oil Shale 34 no. 3, :Estonian Academy Publishers (2017): 197-218 M22
