Forgo, P., D. Redei, J. Molnar, and J. Hohmann. “NEW JATROPHANE DITERPENES FROM EUPHORBIA MONGOLICA WITH MULTIDRUG RESISTANCE MODULATING ACTIVITY”. African Journal of Traditional, Complementary and Alternative Medicines, vol. 6, May 2009, pp. 370-1, https://journals.athmsi.org/index.php/ajtcam/article/view/736.