V. R. Netala, S. B. Ghosh, P. Bobbu, D. Anitha, and V. Tartte, “TRITERPENOID SAPONINS: A REVIEW ON BIOSYNTHESIS, APPLICATIONS AND MECHANISM OF THEIR ACTION”, Int J Pharm Pharm Sci, vol. 7, no. 1, pp. 24–28, Jan. 2015.