R Visvanathan, E. J. “Mathematical Modeling for Thin Layer Sun Drying of Ginger (Zingiber Officinale Rosc.)”. Journal of Spices and Aromatic Crops, vol. 22, no. 1, June 2013, pp. 24-30, https://updatepublishing.com/journal/index.php/josac/article/view/5042.