Firincioglu, H.K., E. Erbektas, L. Dogruyol, Z. Mutlu, S. Ünal, and E. Karakurt. 2009. “Phenotypic Variation of Autumn and Spring-Sown Vetch (Vicia Sativa ssp.) Populations in Central Turkey”. Spanish Journal of Agricultural Research 7 (3), 596-606. https://doi.org/10.5424/sjar/2009073-444.