Selvamani, V., and V. Duraisami. “Characterization and Mapping Irrigation Water Quality of Coconut Groves in Coimbatore and Tiruppur Districts of Tamil Nadu, India”. Journal of Plantation Crops, vol. 42, no. 1, Jan. 2014, pp. 34-39, https://updatepublishing.com/journal/index.php/JPC/article/view/5542.