Bhattarai, C., D. Bhandari, S. Bhandari, K. Bhusal, B. Khatri, A. Srivastava, and B. K. Sapkota. “Factors Affecting the Productivity of Coffee in Gulmi and Arghakhanchi Districts of Nepal”. Journal of Agriculture and Natural Resources, vol. 3, no. 1, Jan. 2020, pp. 51-60, doi:10.3126/janr.v3i1.27017.