Stojanova, Violeta, and Goše Petrov. 2014. “Foraminifer Fauna in Paleogene Sediments at Rabrovo and Dedeli Sites in the Valandovo-Gevgelia Basin, Republic of Macedonia”. Geologica Macedonica 28 (1), pp. 45-. https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/851.