K Jayarajan, M S Madan, P. U. A. K. J. V. A. P. “Diversity of Ginger Cultivation in India - a GIS Study”. Journal of Spices and Aromatic Crops, vol. 15, no. 2, Dec. 2006, pp. 93-99, https://updatepublishing.com/journal/index.php/josac/article/view/4851.