@article {1104,
	title = {The Polistes species in northern Europe (Hymenoptera: Vespidae)},
	journal = {Entomologica Fennica},
	volume = {10},
	year = {1999},
	pages = {191{\textendash}197},
	keywords = {pdf},
	author = {Pekkarinen, A. and Gustafsson, B.}
}
