Gebremichael, A., 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”. International Journal of Agricultural Research, Innovation and Technology, vol. 9, no. 2, Feb. 2020, pp. 62-66, doi:10.3329/ijarit.v9i2.45412.