N. A. Samad, A. B. Abdul, R. Abdullah, T. A. T. Ibrahim, H. Rahman, and Y. S. Keong, “ZERUMBONE (ZER) INDUCES APOPTOSIS IN HEPG2 CELLS VIA MITOCHONDRIAL PATHWAY”, Int J Pharm Pharm Sci, vol. 7, no. 5, pp. 298–302, May 2015.