“Geochemical and Mineralogical Characteristics of the Central Part of the Alšar Deposit (Republic of Macedonia) With Particular Reference to Investigations by X-Ray Diffraction”. Geologica Macedonica, vol. 30, no. 2, Dec. 2016, pp. pp. 115–127, https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/1560.