@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.}
}
