Fedorchuk, I. V., and M. I. Kozak. “Systematic Analysis Of Research -Indicator Species Of Macrophytes Watercourses Major National Nature Park ‘ Podolski Toltry’”. Cherkasy University Bulletin: Biological Sciences Series, vol. 335, no. 2, Jan. 2016, https://bio-ejournal.cdu.edu.ua/article/view/169.