@article {1387,
	title = {Facultative and obligate slavery in formicine ants: frequency of slavery and proportion of slaves. },
	journal = {Biol. J. Linnean Soc.},
	volume = {57},
	year = {1996},
	pages = {47-58},
	author = {Savolainen, R. and Deslippe, R. J.}
}
@article {864,
	title = {Sex investment in a social insect: the proximate role of food.},
	journal = {Ecology},
	volume = {76},
	year = {1995},
	pages = {375-382},
	author = {Deslippe, R. J. and Savolainen, R.}
}
@article {863,
	title = {Role of food supply in structuring a population of Formica ants.},
	journal = {Journal of Animal Ecology },
	volume = {63},
	year = {1994},
	pages = { 756-764},
	author = {Deslippe, R. J. and Savolainen, R.}
}
