@article {1218,
	title = {The effect of interference by formicine ants on the foraging of Myrmica},
	journal = {J. Animal Ecol.},
	volume = {59},
	year = {1990},
	pages = {643-654},
	author = {Veps{\"a}l{\"a}inen, K. and Savolainen, R.}
}
