@article {1174,
	title = {Distribution, nest densities, and ecological significance of wood ants (the Formica rufa group) in Finland. },
	journal = {OILB Bull. SROP II-3},
	year = {1979},
	pages = {181-213},
	author = {Veps{\"a}l{\"a}inen, K. and Rosengren, R. and Wuorenrinne, H.}
}
