Annamalainathan, K., Joby Joseph, Badre Alam, P.R. Satheesh, and James Jacob. “Seasonal Changes in Xylem Sap Flow Rate in Mature Rubber Plants”. Journal of Plantation Crops 41, no. 3 (September 12, 2013): 343–349. Accessed September 21, 2025. https://updatepublishing.com/journal/index.php/JPC/article/view/5847.