Oyama, R. K. Group of Genetics and Evolution, MPI for Chemical Ecology, Max Planck Society;
http://dx.doi.org/10.3732/ajb.91.6.918 (Publisher version)
Oyama, R. K., & Baum, D. A. (2004). Phylogenetic relationships of north American Antirrhinum (Veronicaceae). American Journal of Botany, 91(6), 918-925. doi:10.3732/ajb.91.6.918.