PAWLIKOWSKI, Tadeusz and PAWLIKOWSKI, Krzysztof. Nesting interactions of the social wasp Dolichovespula saxonica [F.] (Hymenoptera: Vespinae) in wooden nest boxes for birds in the forest reserve „Las Piwnicki” in the Chełmno Land (Northern Poland). Ecological Questions. Online. 14 July 2010. Vol. 13, pp. 67-72. [Accessed 15 January 2025]. DOI 10.12775/v10090-010-0017-9.