Sah, G., Shah, S., Sah, S., Thapa, R., McDonald, A., Sidhu, H., Gupta, R. and Wall, P. (2013) “Productivity and soil attributes as influenced by resource conservation technologies under rice- wheat system in Nepal”, Agronomy Journal of Nepal, 3, pp. 64–72. doi: 10.3126/ajn.v3i0.9007.