Triterpenoidal Saponins: Bioactive Secondary Metabolites from Zygophyllum coccineum - Amin, Elham; El-Hawary, Seham S.; Fathy, Magda M.; Mohammed, Rabab; Ali, Zulfiqar; Tabanca, Nurhayat; Wedge, David E.; Becnel, James J.; Khan, Ikhlas A. (Planta Medica, 2011)