1. Under the influence: a history of nitrous oxide and oxygen anesthesia;Smith,1982
2. Assessing the potential for awareness and learning under anesthesia;Kole;J Am Assoc Nurse Anesth,1993
3. Dr. Wells’ impact on dentistry and medicine;Chancellor;J Am Dent Assoc,1994
4. Nitrous oxide analgesia in dentistry;Ruben;Br Dent J,1972
5. Sedation, local and general anesthesia in dentistry;Jorgensen,1985