@Article{ GOMEZ_PERFECTTI_MARTINEZ:531-545,

author = { JOSE MARIA GOMEZ REYES and FRANCISCO PERFECTTI ALVAREZ and JUAN PEDRO MARTINEZ CAMACHO } ,

title = { NATURAL SELECTION ON ERYSIMUM MEDIOHISPANICUM FLOWER SHAPE: INSIGHTS INTO THE EVOLUTION OF ZYGOMORPHY },

journal = { THE AMERICAN NATURALIST },

year = { 2006 },

volume = { 168 },

issn = { 0003-0147 },

pages = { 531-545 },

doi = { http://dx.doi.org/10.1086/507048 },

}