1. Ball, P.W. 1968. Flora europaea 2: 128–136. Ed. by T.G. Tutin et al. Cambridge Univ. Press, London.
2. Bueno, M.A. 1975. Taxonometria y cariologia en el genero Vicia. Ph.D. Thesis, Facultad de Ciencias, Universidad Complutense, Madrid.
3. Chooi, W.Y. (1971a). Variation in nuclear DNA content in the genus Vicia. Genetics 68: 195–211.
4. Chooi, W.Y. (1971b). Comparison of the DNA of six Vicia species by the method of DNA-DNA hybridization. Genetics 68: 213–230.
5. Cooper, R.L. (1959). Hybridization in Vicia.Agronomy Abstracts. Ann. Soc. Agronomy, p. 56.