Kaur, Jagmohan, and Jagroop Kaur. “Appropriate Nitrogen Schedules in Direct Seeded Rice (Oryza Sativa L.)”. International Journal of Bio-Resource and Stress Management, vol. 8, no. Apr, 2, Apr. 2017, pp. 242-6, https://ojs.pphouse.org/index.php/IJBSM/article/view/1103.