@inbook {880,
	title = {Queen recruitment in polygynous and polydomous Formica populations.},
	booktitle = {Teoksessa: Veeresh, G.K., Mallik, B. \& Viraktamath, C.A. (toim.), Social insects and the environment: 243-244. Oxford and IBH Publishing Co. New Delhi.},
	year = {1991},
	author = {Fortelius, W. and Fletcher, D.J.C. and Cherix, D.}
}
