Kobal, Vasyl, and Maryna Kobal. “Raising the Achievements of Schoolchildren in Mountain Regions by Means of Using Local History Lore Materials”. Journal of Vasyl Stefanyk Precarpathian National University, vol. 1, no. 2-3, Dec. 2014, pp. 109-14, doi:10.15330/jpnu.1.2-3.109-114.