@article {899,
	title = { Worker policing and nest mate recognition in the ant Formica fusca.},
	journal = {Behav. Ecol. Sociobiol.},
	volume = {61},
	year = {2007},
	pages = {1143-1149},
	author = {Helanter{\"a}, H. and Sundstr{\"o}m, L.}
}
