Volkov, Alexander, Todor Serafimovski, Andrey Galyamov, & Goran Tasev. " GEOPHYSIC MODEL OF THE EARTH'S CRUST AND GEODYNAMIC POSITION OF LEAD-ZINC DEPOSITS OF THE REPUBLIC OF NORTH MACEDONIA AND NEIGHBORING COUNTRIES." Geologica Macedonica [Online], 33.2 (2019): 89-98. Web. 10 Aug. 2020