1. D. J. Mabberely, The Plant Book, Cambridge University Press, Cambridge (1997).
2. K. H. Rechinger, Flora Iranica, Graz, Austria, No. 150, 354 (1982).
3. A. J. Duke, Handbook of Medicinal Herbs, CRC Press, Boca Raton, Pl, 457 (1986).
4. N. Maleki, A. Garjani, H. Nazemiyeh, N. Nilfouroushan, A. T. Eftekhar Sadat, Z. Allameh, and N. Hasannia, J. Ethnopharmacol., 75, 213 (2001).
5. F. Sefidkon, A. Naderi Nik, P. Bagaii, and I. Javidtash, Flavour Frag. J., 18, 301 (2003).