Upper Neogene siliceous microfossils from Pelagonia Basin (Balkan Peninsula)

by Ognjanova-Rumenova, Nadja
Source: 1. Geologica carpathica 1. 1335-0552 1. Roč. 56, č. 3 (2005), s. 347-358

Cyclotella Iris Brun & Héribaud - A Group from the Upper Miocene Sediments of the Sofia Basin, Bulgaria

by Ognjanova-Rumenova, Nadja G.
Source: 1. Geologica Carpathica 1. 1335-0552 1. Roč. 47, č. 5(1996), s. 301-310

Paleoecology of the Late Miocene maar lakes, Podrečany basalt formation, Southern Slovakia, on the basis of siliceous microfossils

by Ognjanova-Rumenova, Nadja, Vass, Dionýz
Source: 1. Geologica carpathica 1. 1335-0552 1. Roč. 49, č. 5 (1998), s. 351-368

Paleoecology of the Late Miocene maar lakes, Podrečany basalt formation, Southern Slovakia, on the basis of siliceous microfossils

by Ognjanova-Rumenova, Nadja, Vass, Dionýz
Source: 1. Geologica carpathica 1. 1335-0552 1. Roč. 49, č. 5 (1998), s. 351-368

Paleoecological development of the Neogene Sofia Basin (southwester Bulgaria) based on sedimentological and paleontological evidence

by Ognjanova-Rumenova, Nadja, Yaneva, Marlena, Botev, Ivan
Source: 1. Geologica carpathica 1. Roč. 59, č. 1 (2008), s. 59-70 1. 1335-0552