2 literature references for Vigna senegalensis A.Chev.:

Author: Hepper,F.N.
Year: 1958
Title:
Source: Papilionoideae.In:Flora West Tropical Africa.Keay,R.W.J.
Author: Marechal,R. et al.
Year: 1978
Title:
Source: Boissiera 28:1-273 ...Phaseolus et Vigna...