1. G. Fenaroli, in: T.E. Furia, N. Bellanca (Eds.), Handbook of Flavor Ingredients, second ed., CRC Press, Cleveland, OH, 1975, p. 928.
2. K. Bauer, D. Garbe, H. Surburg (Eds.), Common Fragrance and Flavor Materials: Preparation, Properties and Uses, second, revised ed., VCH, New York, 1990, p. 218.