Tomovski, Dimitri, Katerina Bačeva Andonovska, Robert Šajn, Metody Karadjov, and Trajče Stafilov. 2019. “DISTRIBUTION OF CHEMICAL ELEMENTS IN SEDIMENTS AND ALLUVIAL SOILS FROM THE CRNA REKA RIVER BASIN”. Geologica Macedonica 33 (2), 125-45. https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/3327.