Latha, A., V. Radhakrishnan, and S. Mini. “UPASI Tea Research Foundation Tea Research Institute, Nirar Dam B. P.O. Valparai - 642 127, Coimbatore Dist., Tamil Nadu”. Journal of Plantation Crops, vol. 37, no. 2, July 2009, pp. 157-9, https://updatepublishing.com/journal/index.php/JPC/article/view/5958.