ŁASKA, Grażyna. Evaluation of current status, threats and means of protection of heaths Arctostaphylo-Callunetum R.Tx. et Prsg 1940 in the Czerwony Bór (NE Poland). Ecological Questions. Online. 10 July 2015. Vol. 21, pp. 17-23. [Accessed 27 March 2026]. DOI 10.12775/EQ.2015.003.