@article {1053,
	title = { Effects of urban pressure on colonies of Formica rufa group (Hymenoptera, Formicidae) in the town of Espoo (Finland)},
	journal = {Annales Zoologici},
	volume = {42},
	year = {1989},
	pages = {335-344},
	author = {Wuorenrinne, H.}
}
