Stefanova, V., T. Serafimovski, and G. Tasev. “Gold Prospection in Streams and Recent Alluvions in the Western Parts of the Kratovo-Zletovo Volcanic Area”. Geologica Macedonica, Vol. 30, no. 2, Dec. 2016, pp. pp. 129-, https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/1561.