@article {798,
	title = {Die Hummeln als G{\"a}ste der Blattl{\"a}use. },
	journal = {Ann. Soc. Zool.-Bot. Fenn. Vanamo},
	volume = {8},
	year = {1929},
	pages = {51-52},
	author = {Hulkkonen, O.}
}
