1. The Physiology of Anesthesia;Beecher,1938
2. Nitrous Oxide and Oxygen Analgesia in the General Practice of Dentistry;Henegan;J. Am. Coll. Dentists,1942
3. Gavel, J. M.: Personal communication, 1943.
4. The Analgetic Effect of Low Concentrations of Nitrous Oxide Compared in Man With Morphine Sulphate;Chapman;J. Clin. Investigation,1943
5. Essentials of General Anesthesia;Macintosh,1941