1. ?Perfume and Flavor Materials of Natural Origin?, Elizabeth, N. J., 1960, p. 262.
2. & ?Die ätherischen Öle?, Vol. 5, Akademie-Verlag, Berlin, 1959, p. 350, and ref. cit. therein.
3. ?The Essential Oils?, Vol. 4, D. Van Nostrand Comp. Inc., Princeton, N. J., p. 671, and ref. cit. therein.