J. Eapen, Santhosh, K.V. Ramana, and K.V. Saji. 2011. “Host Resistance in Black Pepper (Piper Nigrum L.) Against Root-Knot and Burrowing Nematode”. Journal of Plantation Crops 39 (3):341-46. https://updatepublishing.com/journal/index.php/JPC/article/view/5914.