Reddi, S. G., D. Patil, H. Maheshwarappa, S. Arulraj, B. M. Reddy, and B. Chandravathi. “Evaluation of African Oil Palm Germplasm for Drought Tolerance”. Journal of Plantation Crops, vol. 42, no. 2, Apr. 2014, pp. 170-4, https://updatepublishing.com/journal/index.php/JPC/article/view/5584.