1. ACTS, 1895-1908, Opium Act 1895, (SA) Aboriginals Protection and Restriction of, the Sale of Opium Act 1897 (Qld), Opium Smoking Prohibition Act 1905, (Vic), Police Offences Amendment Act 1908
2. Efficacy of controlled-release codeine in chronic nonmalignant pain: a randomized, placebo-controlled clinical trial;Arkinstall;Pain,1995
3. Report of the Working Party on Management of Severe Pain 1988
4. Epidural morphine in treatment of pain;Behar;Lancet,1979
5. Chronic non malignant pain treated with long-term oral narcotic analgesics;Bouckoms;Ann Clin Psychiat,1992