Ng’elenge, Haji, Philip Damas, and Fredy Kilima. 2022. “Farm Profit Maximizing Food Crops and Tree Combination in Mufindi District: A Multi-Period Programming Approach”. Global Journal of Business, Economics and Management: Current Issues 12 (2):168-79. https://doi.org/10.18844/gjbem.v12i2.6167.