Adinurani, P. G., R. H. Setyobudi, S. K. . Wahono, M. Mel, A. Nindita, E. . Purbajanti, S. S. . Harsono, . A. R. . Malala, L. O. Nelwan, and A. . Sasmito. “Ballast Weight Review of Capsule Husk Jatropha Curcas Linn. On Acid Fermentation First Stage in Two Phase Anaerobic Digestion: Jatropha Curcas Acid Fermentation”. Proceedings of the Pakistan Academy of Sciences: B. Life and Environmental Sciences, vol. 54, no. 1, Mar. 2017, pp. 47-57, http://ppaspk.org/index.php/PPAS-B/article/view/371.