Medicinal source:

Gonzalez-Tejero, M.R., Casares-Porcel, M., Sanchez-Rojas, C.P., Ramiro-Gutierrez, J.M., Molero-Mesa, J., Pieroni, A., Giusti, M.E., Censorii, E., de Pasquale, C., Della, A., Paraskeva-Hadijchambi, D., Hadjichambis, A., Houmani, Z., El-Demerdash, M., El-Zayatf, M., Hmamouchi, M. & ElJohrig, S. (2008). Medicinal Plants in the Mediterranean Area: Synthesis of the Results of the Project Rubia. Journal of Ethnopharmacology. 116: 341-357.