Andualem, A., T. Wato, A. Asfaw, and G. Urgi. “Improving Primary Nutrients (NPK) Use Efficiency for the Sustainable Production and Productivity of Cereal Crops: A Compressive Review”. Journal of Agriculture Sustainability and Environment, vol. 3, no. 1, Apr. 2024, pp. 1-28, doi:10.56556/jase.v3i1.833.