Hristovski, S. ., M. Jordanova, M. Musai, V. Boškovska, K. Rebok, Dinevska-Ќovkarovska S., and L. Melovski. “Heavy Metals in Water and Sediments of the Upper Course of the River Crn Drim”. Macedonian Journal of Ecology and Environment, vol. 21, no. 1-2, Dec. 2019, pp. 73-78, doi:10.59194/MJEE19211-2073h.