The biostratigraphic basis of the paleogene - neogene boundary in the Central (Ukrainian Carpathians) and Eastern (Black sea depression, Northern Caucasus) Paratethys

by Andreyeva-Grigorovich, A.S, Gruzman, A.D
Source: 1. Geologica Carpathica 1. 0016-7738 1. Roč. 45, č. 6(1994), dát. december, s. 333-342