Cvetkovic Olga G,Curiale JA,Dragutinovic Vesna V,Jarvic D,Vrvic Miroslav M,Vitorovic Dragomir K (2001) Evidence of stability of sedimentary organic matter during bacterial desilicification of an oil shale, JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, vol. 66, br. 2, str. 95-99 (Article)