Shrestha, S. R., S. Manandhar, B. Chaudhary, B. Sapkota, R. Bhattarai, and S. P. Adhikari. “Response of Wheat Genotypes to Different Levels of Nitrogen”. Journal of Nepal Agricultural Research Council, vol. 2, Dec. 2016, pp. 9-14, doi:10.3126/jnarc.v2i0.16115.