Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
Department of Geology, Palaeontology and Fossil Fuels, Faculty of Geology and Geography, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
Comenius University, Faculty of Natural Sciences, Department of Geology and Palaeontology, Mlynská dolina G–229, Ilkovičova 6, SK–84215 Bratislava, Slovak Republic
Faculty of Geology and Geography, Department of Geology, Palaeontology and Fossil Fuels, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
Faculty of Geology and Geography, Department of Geology, Palaeontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia, Bulgaria
Department of Geology & Paleontology, Faculty of Geology & Geography, Sofia University St. K. Ohridski, 15 Tsar Osvoboditel Blvd., 1504 Sofia, Bulgaria