K N Babu, B K Moorthy, B. S. P. H. J. K. G. K. V. S. T. J. Z. P. N. R., and P. A. M. V. A. Parthasarathy. “’IISR Thevam’, ’IISR Malabar Excel’ and ’IISR Girimunda’- Three New Black Pepper (Piper Nigrum L.) Clones”. Journal of Spices and Aromatic Crops, vol. 13, no. 1, June 2004, pp. 01-05, https://updatepublishing.com/journal/index.php/josac/article/view/4778.