@article {6902,
	title = {Diversification rates in a temperate legume clade: are there so many species of Astragalus (Fabaceae)?},
	journal = {Amer. J. Bot.},
	volume = {83},
	year = {1996},
	month = {1996///},
	pages = {1488 - 1502},
	url = {http://www.botany.wisc.edu/courses/botany_940/03KeyInnovations/papers/Sanderson},
	author = {M.J. Sanderson and M.F. Wojciechowski}
}
