Rajeevan, B., M.N. Gopinath, Boban Mathai, and Ramesh B. Nair. “Productivity Ratings in Relation to Holding Size and Resource-Management in Indian Rubber Plantation Sector”. Journal of Plantation Crops 41, no. 3 (September 12, 2013): 411–416. Accessed September 21, 2025. https://updatepublishing.com/journal/index.php/JPC/article/view/5858.