Soni, M L, et al. “Evaluation of CropSyst Model for Simulating Green Area Index, Soil Water and Yield of Psyllium in Hyper Arid Partially Irrigated Zone of Rajasthan”. Annals of Arid Zone, vol. 55, no. 3 & 4, Jan. 2017, https://epubs.icar.org.in/index.php/AAZ/article/view/66649.