A. Gebremichael, B. Bekele, and B. Tadesse, “Evaluation of the effect of sorghum-legume intercropping and its residual effect on yield of sorghum in yeki woreda, sheka zone, Ethiopia”, Int. J. Agril. Res. Innov. & Tech., vol. 9, no. 2, pp. 62–66, Feb. 2020.