Boev, Ivan, Orce Spasovski, Dejan Mirakovski, and Elizabeta Karakaseva. 2014. “Geochemistry and Origin of Particles Pm-10 in the Area of Tikveš, Republic of Macedonia”. Geologica Macedonica 28 (2), pp. 139-148. https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/917.