Palynological data about the presence of the family Symlocaceae in the miocene of Northwestern Bulgaria

by Ivanov, Dimiter A.
Source: 1. Geologica Carpathica 1. 1335-0552 1. Roč. 46, č. 1(1995), dát. február, s. 37-40

Diatom Analysis on Neogene Sediments from the Elhovo Basin in South Bulgaria

by Temniskova-Topalova, Dobrina, Ivanov, Dimiter A., Popova, Evgenija
Source: 1. Geologica Carpathica 1. 1335-0552 1. Roč. 47, č. 5(1996), s. 289-300