CEYNOWA-GIEŁDON, Mirosława, ADAMSKA, Edyta and KAMIŃSKI, Dariusz. The importance of habitat islands in the preservation of relict xerothermic and calcicolous epigeic lichens based on the example of the “Ostnicowe Parowy Gruczna” nature reserve (N Poland). Ecological Questions. Online. 26 July 2017. Vol. 25, pp. 19-26. [Accessed 15 June 2026]. DOI 10.12775/EQ.2017.002.