@article {994,
	title = {Ecology and Nesting Behavior of Bombus atratus Franklin in Andean Highlands (Hymenoptera: Apidae)},
	journal = {Journal of the Hymenoptera Research},
	volume = {13},
	year = {2004},
	chapter = {28-36},
	author = {Gonzalez, V.H. and Mejia, A. and Rasmussen, C.}
}
