Ashraf, A. Mohammed, et al. “Influence of In-Situ Soil Moisture Conservation Practices With Pusa Hydrogel on Physiological Parameters of Rainfed Cotton”. International Journal of Bio-Resource and Stress Management, vol. 11, no. Dec, 6, Dec. 2020, pp. 548-57, https://ojs.pphouse.org/index.php/IJBSM/article/view/4052.