Petrography and geochemistry of Oligocene bituminous coal from the Jiu Valley, Petroşani basin (Southern Carpathian Mountains), Romania

Belkin HE, Tewalt SJ, Hower JC, Stucker JD, O’Keefe JM, Tatu CA, Buia G
International Journal of Coal Geology. 2010;82(1-2):68-80. IF: 2.069;