Stojanova, V., and G. Petrov. “Foraminifer Fauna in Paleogene Sediments at Rabrovo and Dedeli Sites in the Valandovo-Gevgelia Basin, Republic of Macedonia”. Geologica Macedonica, Vol. 28, no. 1, June 2014, pp. pp. 45-, https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/851.