@book {1991, title = {The Monocotyledons:a Comparative Study}, year = {1982}, pages = {378}, publisher = {Academic Press}, organization = {Academic Press}, address = {London}, keywords = {MONOCOTYLEDON}, author = {Dahlgren, R. and Clifford, H. T.} } @book {1992, title = {The Families of the Monocotyledons: Structure, Evolution and Taxonomy}, year = {1985}, pages = {520}, publisher = {Springer-Verlag}, organization = {Springer-Verlag}, address = {Berlin}, keywords = {EVOLUTION, MONOCOTYLEDON, TAXONOMY}, author = {Dahlgren, R. and Clifford, H. T. and Yeo, P. F.} } @article {1993, title = {Monocotyledon evolution: charactrers and phylogenetic estimation}, journal = {Evolutionary Biology}, volume = {16}, year = {1982}, pages = {255-395}, keywords = {EVOLUTION, MONOCOTYLEDON}, author = {Dahlgren, R. and Rasmussen, F. N.} } @article {1994, title = {Monocotyledon evolution:Characters and phylogenetic estimate}, journal = {Evolutionary Biology}, volume = {16}, year = {1983}, pages = {255-395}, keywords = {CHARACTERS, CR REF, EVOLUTION, MONOCOTYLEDON}, author = {Dahlgren, R. and Rasmussen, F. N.} }