Parpan, V. I., V. D. Hudyma, and Parpan Т. V. “CUTTING METHODS AND VOLUMES OF TIMBER HARVESTING IN MOUNTAIN FORESTS IN UKRAINIAN CARPATHIANS”. Forestry and Forest Melioration, no. 131, Feb. 2018, pp. 135-42, http://forestry-forestmelioration.org.ua/index.php/journal/article/view/63.