Rebolé, A., C. Alzueta, L. Ortiz, C. Barro, M. Rodríguez, and R. Caballero. “Yields and Chemical Composition of Different Parts of the Common Vetch of Flowering and at Two Seed Filling States”. Spanish Journal of Agricultural Research, Vol. 2, no. 4, Dec. 2004, pp. 550-7, doi:10.5424/sjar/2004024-111.