Seifert, B. 2003: The Palaearctic members of the Myrmica schenki group with description of a new species (Hymenoptera: Formicidae). - Beitr├Ąge Zur Entomologie = Contributions to Entomology 53(1): 141-159 - doi: 10.21248/contrib.entomol.53.1.141-159