Kowalczyk, J. and Szczepko, K. 2008. Contribution to the knowledge of Aculeata сhymenoptea) of łódzkie voivodeship. Acta Universitatis Lodziensis. Folia Biologica et Oecologica. 4, (Jan. 2008), 147–166. DOI:https://doi.org/10.18778/1730-2366.04.10.