@article {6517,
	title = {Historical biogeography, divergence times, and diversification patterns of bumble bees (Hymenoptera: Apidae: <i>Bombus</i>)},
	journal = {Systematic Biology},
	volume = {57},
	number = {1},
	year = {2008},
	note = {PDF},
	pages = {58{\textendash}75},
	keywords = {biogeography, insecta, molecular clock, phylogenetics},
	author = {Hines, Heather M.}
}
