@article {1232,
	title = { Evolutionary genetics of social wasps (Hymenoptera, Vespidae: Vespula)},
	journal = {Insectes Sociaux},
	volume = {31},
	year = {1984},
	pages = {375-386},
	author = {Varvio-Aho, S.-L. and Pamilo, P. and Pekkarinen, A.}
}
@article {1109,
	title = {Laajentavatko Bombus subterraneus ja B. sylvarum (Hymenoptera, Apidae) edelleen esiintymisaluettaan Suomessa? },
	journal = {Notulae Entomologicae},
	volume = {64},
	year = {1984},
	pages = {196},
	author = {Pekkarinen, A. and Perki{\"o}m{\"a}ki, J.}
}
@article {1095,
	title = {Resource partitioning and coexistence in bumblebees (Hymenoptera, Bombinae)},
	journal = {Annales Entomologici Fennici},
	volume = {50},
	year = {1984},
	pages = {97-107},
	author = {Pekkarinen, A.}
}
@article {1078,
	title = {Genetic variation in bumblebees (Bombus, Psithyrus) and putative sibling species Bombus lucorum},
	journal = {Hereditas},
	volume = {101},
	year = {1984},
	pages = {245-251},
	author = {Pamilo, P. and Varvio-Aho, S.-L. and Pekkarinen, A.}
}
