MTA Genel Müdürlüğü (General Directorate of Mineral and Exploration), Jeoloji Etütleri Dairesi, Üniversiteler Mah. Dumlupınar Bulvarı, TR-06800, Balgat, Ankara, Turkey
Museum national d’Histoire naturelle, Department Histoire de la Terre, UMR 5143 du CNRS, Paleobiodiversite et Paleoenvironments, case postale 38, 8 rue Buffon, F-75231 Paris cedex 05, France
Faculty of Geology and Geography, Department of Mineralogy, Petrology and Economic Geology, Sofia University “St Kliment Ohridski”, 15 Tsar Osvoboditel Blvd, 1504 Sofia