1. Heilige Schrift. Genesis II, 21, King James Version.
2. PRINZ, H.: Local anesthesia as applied to dentistry. Aus: GWATHMEY, J. T.: Anesthesia. 535 S. 2. Aufl. New York: Macmillan Co., 1924.
3. Archer, W. H.: The history of anesthesia. S. 3. Maschinengeschriebenes Manuskript
4. Hume, E. H.: Note on narcotics in ancient Greece in ancient China. Bull. N. Y. Acad. Med. 10, 618–622 (1934).
5. Sarton, G.: Introduction to the history of science. Bd. I, S. 77. Baltimore: Williams Wilkins 1927.and