Rudolphe Spichiger & Vincent Savolainen. 1997. Present state of Angiospermae phylogeny. Candollea 52: 435-455 (textArxivat 2007-03-12 a Wayback Machine.)
web.archive.org
Rudolphe Spichiger & Vincent Savolainen. 1997. Present state of Angiospermae phylogeny. Candollea 52: 435-455 (textArxivat 2007-03-12 a Wayback Machine.)