Dimitrova, Dafinka, Ivan Boev, and Vesna Zajkova Panova. 2015. “Heavy and Toxic Metals in Water and Sediments of the Vardar River in Skopje”. Geologica Macedonica 29 (1), pp. 25-46. https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/1008.