Dimitrovska, V., and B. Boev. “Petrologic, Morphologic and Functional Analysеs of Ground and Abrasive Stone Tools from Rug Bair, Ovče Pole Valley”. Geologica Macedonica, Vol. 25, no. 1, Apr. 2013, pp. pp.37–52, https://js.ugd.edu.mk/index.php/GEOLMAC/article/view/268.