Ojo, D., Oduola, M. and Oduwaye, O. 2008. Graphical assessment of yield stability and adaptation in cowpeas (<i>Vigna unguiculata</i> (L) Walp). Nigerian Journal of Genetics. 20, 1 (Oct. 2008), 17–25. DOI:https://doi.org/10.4314/njg.v20i1.42248.