1. Royal College of Physicians (1962) Smoking and health. Turnbridge wells, Pitman Medical
2. U.S. Department of Health, Education and Welfare (1964) Smoking and health. Washington, Public Health Service Publication no 1103
3. World Health Organization (1984) Health for all by the year 2000. Geneva, Copenhagen
4. European Office of the WHO, Public Information Office (1988) Planning for a smoke-free generation. Series Smoke-free Europe: 6. Copenhagen. Foundation on Smoking and Health. Annual Reports 1987, 1988. The Hague