Title: Biblio RTF Export
Author: Biblio 7.x

G. W.  Rothwell and Serbet, R., ?Lignophyte phylogeny and the evolution of spermatophytes: a numerical cladistic analysis?, Systematic Botany, vol. 19, pp. 443-482, 1994.

K. C.  Nixon, Crepet, W. L., Stevenson, D. W., and E.M., F., ?A re-evaluation of seed plant phylogeny.?, Annals of the Missouri Botanical Garden , vol. 81, pp. 484-533, 1994.