Ramanjaneyulu, A. V., et al. “Response of Rainfed Castor to Soil and Foliar Application of Zinc and Iron Micronutrients”. International Journal of Bio-Resource and Stress Management, vol. 12, no. Jun, 3, June 2021, pp. 158-64, https://www.ojs.pphouse.org/index.php/IJBSM/article/view/4088.