Rea, RS, MR Islam, MM Rahman, and K Mix. “Study of Nitrogen Use Efficiency and Yield of Rice Influenced by Deep Placement of Nitrogen Fertilizers”. SAARC Journal of Agriculture 17, no. 1 (August 25, 2019): 93-103. Accessed June 1, 2020. https://www.banglajol.info/index.php/SJA/article/view/42764.