Islam, MR, PK Saha, SK Zaman, and MJ Uddin. “Phosphorus Fertilization in Inbred and Hybrid Rice”. Dhaka University Journal of Biological Sciences 19, no. 2 (November 20, 2011): 181–187. Accessed January 21, 2022. https://www.banglajol.info/index.php/DUJBS/article/view/8962.