PC Jena, Atul K Shrivastava, and D. K. Shrivastava, “Optimization of Alcohol Amount for Transesterification of Ratanjot (Jatropha curcus L.)”, JAEI, vol. 44, no. 2, pp. 121–123, Jun. 2007, doi: 10.52151/jae2007442.1269.