Ghosh, D., J. Hore, and A. Bandopadhyay. “Effect of Spacing and Size of Planting Material on Growth and Yield of Turmeric Grown in Coconut Plantation”. Journal of Plantation Crops, vol. 39, no. 2, June 2011, pp. 337-9, https://updatepublishing.com/journal/index.php/JPC/article/view/5944.