@article {667,
	title = {The genus Sorbus (Maloideae, Rosaceae) in Europe and in North Africa: Morphological Analysis and Systematics},
	journal = {Syst. Bot.Syst. Bot.},
	volume = {23},
	year = {1998},
	pages = {189-212},
	author = {Aldasoro,J.J. and Aedo,C. and Navarro,C. and Mu{\~n}oz Garmendia,F.}
}
