Bajracharya, G. B., and R. Maharjan. “Cytotoxicity, Total Phenolic Content and Antioxidant Activity of Bergenia Purpurascens Rhizome”. Nepal Journal of Science and Technology, vol. 14, no. 1, Oct. 2013, pp. 87-94, doi:10.3126/njst.v14i1.8927.