Безроднова, О. В., І. М. Лоза, and Н. М. Назаренко. “Herbage Cover Heterogeneity As Indicator of Ecology-Phytocoenotical and Biotopical Diversity in Oak Forests”. The Journal of V.N.Karazin Kharkiv National University. Series «Biology», Vol. 18, no. 1079, May 2013, pp. 38-45, https://periodicals.karazin.ua/biology/article/view/13735.