Bondaruk, M. A., O. G. Tselishchev, and G. V. Bondaruk. “Rarity Constituent of Forest Phytocoenoses in Ukrainian Forest-Steppe”. Forestry and Forest Melioration, no. 134, Nov. 2019, pp. 57-65, doi:10.33220/1026-3365.134.2019.57.