@article {1114,
	title = {Evolutionary relationships in northern European Bombus and Psithyrus species (Hymenoptera, Apidae) studied on the basis of allozymes},
	journal = {Annales Entomologici Fennici},
	volume = {45},
	year = {1979},
	pages = {77-80},
	author = {Pekkarinen, A. and Varvio-Aho, S.-L. and Pamilo, P.}
}
@article {1092,
	title = { Evolution and genetics of Bombus and Psithyrus species (Hymenoptera, Apidae)},
	journal = {Zool. Scripta},
	volume = {8},
	year = {1979},
	pages = {316-317},
	author = {Pekkarinen, A.}
}
@article {1091,
	title = {Varf{\"o}r varierar humlorna s{\r a} mycket I f{\"a}rgen? {\textendash} N{\r a}gra synpunkter},
	journal = {Ent. Tidskr.},
	volume = {100},
	year = {1979},
	pages = {205-206},
	author = {Pekkarinen, A.}
}
@article {1090,
	title = {Morphometric, colour and enzyme variation in bumblebees (Hymenoptera, Apidae, Bombus) in Fennoscandia and Denmark},
	year = {1979},
	author = {Pekkarinen, A.}
}
