Ogeto, M., J. Mohammed, and D. Bedada. “Adoption of Improved Potato Varieties in Jeldu District, Oromia Region, Ethiopia: A Double-Hurdle Model”. International Journal of Agricultural Research, Innovation and Technology, vol. 9, no. 2, Feb. 2020, pp. 15-22, doi:10.3329/ijarit.v9i2.45405.