Allan, G. J., Zimmer, Elizabeth Anne, Wagner, Warren L., and Sokoloff, D. D. 2003. "
Molecular phylogenetic analysis of tribe Loteae (Fabaceae); Implications for classification and biogeography." In
Advances in legume systematics, part 10, higher level systematic. Klitgaard, B. and Bruneau, A., editors. 371–393.