Zadorozhnyy, A. I., and H. H. Hrynyk. “FEATURES OF BASIC WOOD DENSITY DYNAMICS FOR STEM WOOD OF EUROPEAN SPRUCE IN PREVAILING FOREST SITE TYPES ON THE TERRITORY OF POLONINSKYY RIDGE (UKRAINIAN CARPATHIANS)”. Forestry and Forest Melioration, no. 129, Feb. 2018, pp. 27-31, http://forestry-forestmelioration.org.ua/index.php/journal/article/view/107.