Aktar, S., M. Quddus, M. Hossain, S. Parvin, and M. Sultana. “Effect of Integrated Nutrient Management on the Yield, Yield Attributes and Protein Content of Lentil”. Bangladesh Journal of Agricultural Research, vol. 44, no. 3, Oct. 2019, pp. 525-36, doi:10.3329/bjar.v44i3.43483.