Naveen Kumar, D.R., et al. “Acceleration of Pro-Caspase-3 Maturation and Cell Migration Inhibition in Human Breast Cancer Cells by Phytoconstituents of Rheum Emodi Rhizome Extracts”. EXCLI Journal, vol. 12, June 2013, pp. 462-78, https://www.excli.de/index.php/excli/article/view/1163.