Upper Cretaceous volcanoclastic-sedimentary formations in the Timok Eruptive Area (eastern Serbia): new biostratigraphic data from planktonic foraminifera

by Ljubović-Obradović, Darivojka, Carević, Ivana, Mirković, Monika, Protić, Nenad
Source: 1. Geologica carpathica 1. Roč. 62, č.5 (2011), s. 435-446 1. 1335-0552