Codrea, V., Barbu Ο., and H. Bedelean. “MIDDLE MIOCENE DIATOMITE- BEARING FORMATIONS FROM WESTERN ROMANIA”. Bulletin of the Geological Society of Greece 40, no. 1 (June 8, 2007): 21–30. Accessed November 18, 2024. https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/16329.