Stafilov, T., B. Balabanova, R. Sajn, and C. Tánáselia. “Multivariate Factor Assessment for Lithogenic and Anthropogenic Distribution of Macro and Trace Elements in Surface Water. Case Study: Basin of the Bregalnica River, Republic of Macedonia”. Macedonian Journal of Chemistry and Chemical Engineering, vol. 35, no. 2, Nov. 2016, pp. 235-50, doi:10.20450/mjcce.2016.899.