Nadolski, Jerzy. 2014. “Structure of Nests and Colony Sizes of the European Hornet (Vespa Crabro) and Saxon Wasp (Dolichovespula Saxonica) (Hymenoptera: Vespinae) in Urban Conditions”. Sociobiology 59 (4). Feira de Santana, Brazil:1075-1120. https://doi.org/10.13102/sociobiology.v59i4.486.