(1)
Botoucharov, N.; Zdravkov, A.; Gross, D.; Kostova, I.; Bechtel, A. Hydrocarbon Potential of Middle Jurassic Sediments (Stefanets Mb. Of Etropole Fm.) from the Western Part of Balkan Orogenic System, Bulgaria. C. R. Acad. Bulg. Sci. 2022, 75, 1317-1324.