Rajda, E. “ALGAE OF SWAMPS OF LANDSCAPE NATURAL RESERVE ‘VISHNYKI’ (POLTAVA REGION)”. The Journal of V.N.Karazin Kharkiv National University. Series «Biology», Vol. 1, no. 709, Dec. 2005, pp. 67-71, https://periodicals.karazin.ua/biology/article/view/161.