Wen Deng, Bo Hu, Chun-Ling Dai, Yi-Jun Wang, Hai-Fan Chen, S. William Zito, Li-Wu Fu and Zhe-Sheng Chen (2013) “Anticancer Activity of Oldenlandia Diffusa & Viola Philippica Car ”, Journal of Cancer Research Updates, 2(2), pp. 87–94. doi: 10.6000/1929-2279.2013.02.02.1.