@article {820,
	title = { Male reproductive success: paternity contribution to queens and workers in Formica ants},
	journal = {Behav. Ecol. Sociobiol.},
	volume = {41},
	year = {1997},
	pages = {11-15},
	author = {Keller, L. and Chapuisat, M. and Sundstr{\"o}m, L.}
}
