Yaregal Fekadu, Alemu Azmeraw, and Takele Atnafu. “Adoption of Improved Soybean Varieties by Smallholder Farmers in Northwestern Ethiopia: Double Hurdle Model Approach”. Ethiopian Journal of Development Research 47, no. 1 (February 5, 2025): 163–202. Accessed March 10, 2025. http://ejol.aau.edu.et/index.php/EJDR/article/view/11334.