Pawlikowski, Tadeusz. “Dynamics of Bee Communities (Hymenoptera: Apoidea: Apiformes) in Heath and Grassland Patches During Secondary Succession of the Peucedano-Pinetum Series in the Toruń Basin”. Ecological Questions 13 (July 14, 2010): 29–33. Accessed January 15, 2025. https://apcz.umk.pl/EQ/article/view/v10090-010-0020-1.