Srimathi, P., N. Mariappan, and L. Sundaramoorthi. “Study of Seed Orientation in Different Depths in Jatropha Curcas L”. Journal of Life Sciences Research, vol. 1, no. 2, June 2014, pp. 41-44, http://asianonlinejournals.com/index.php/Lifsc/article/view/601.