1. Royal College of Surgeons of England. Report Working Party (1993) Guidelines for sedation by non-anaesthetists. London: Royal College of Surgeons of England
2. Roberts GJ (1983) Relative analgesia in clinical practice. In Anaesthesia and Sedation in Dentistry, Monographs in Anaesthesiology 12. Editors MP Coplans and RA Green, Elsevier, Amsterdam, 231–279
3. Rubin J, Brock-Utne JG, Greenberg M et al (1977) Laryngeal incompetence during experimental relative analgesia using 50% nitrous oxide in oxygen. British Journal of Anaesthesia 49: 1005–1008
4. Parbrook GD, Still DM, Parbrook EO (1989) Comparison of I.V. sedation with midazolam and inhalational sedation with isoflurane in dental outpatients. British Journal of Anaesthesia 63: 81–86
5. McClure JH, Brown DT, Wildsmith JAW (1983) Comparison of the I.V. administration of midazolam and diazepam as sedation during spinal anaesthesia. British Journal of Anaesthesia 55: 1089–1093