Husein, A. I.; Ali-Shtayeh, M. S.; Jondi, W. J.; Zatar, N. A.-A.; Al-Nurie, M. A.-A. High Performance Liquid Chromatographic Method for Quantitative Determination of Emodin in Rumex Cyprius Marb, Spectrophotometric Studies. IJSBAR 2014, 18, 217-222.