1. Flora of Turkey and the East Aegean Islands, vol 7. Edinburgh University Press: Edinburgh, 1982; 688- 691.
2. . Flora of Turkey and the East Aegean Islands, vol 10. Edinburgh University Press: Edinburgh, 1988; 215.
3. . The Encyclopaedia of Essential Oils. Element Books: Longmead, 1992; 59- 60.
4. . The Essential Oils, vol 2. Krieger: Huntington, New York, 1975; 264- 265.
5. Über Caryophyllen, V. Die Betulenole