Joshi, Bal, Sanjaya Gyawali, Surya Sah, and Rewati Chaudhary. “Competition Among Wild Rice, Landrace, Improved Cultivar and F1 Hybrid Rice”. Journal of Agriculture and Environment 18 (May 12, 2018): 29-40. Accessed July 16, 2019. https://www.nepjol.info/index.php/AEJ/article/view/19887.