Buczkowska K., Sawicki J., Szczecińska M., Klama H., Bączkiewicz A. 2012. Isozyme and DNA markers reveal a new genetically distinct taxon of Calypogeia sphagnicola (Jungermanniopsiada, Calypogeiaceae). Polish Botanical Journal. 57(1): 95-107.

Buczkowska K., Sawicki J., Szczecińska M., Klama H., Bączkiewicz A. 2012. Isozyme and DNA markers reveal a new genetically distinct taxon of Calypogeia sphagnicola (Jungermanniopsiada, Calypogeiaceae). Polish Botanical Journal. 57(1): 95-107.