1. Jakob O: Der Suizid in der Schweiz 1876–1977. Soz Präventivmed 1979;24: 21–27
2. WHO Working Group: Changing patterns in suicide behavior. Copenhagen: WHO, EURO Reports and Studies 74, 1982
3. Kreitman N: Die Epidemiologie von Suizid und Parasuizid. Nervenarzt 1980;51:131–138
4. Farberow NL: Attitudes towards suicide. Lecture, 13th International Congress for Suicide Prevention and Crisis Intervention, Vienna, July 1–4, 1985
5. Sainsbury P: Suicide in London. An ecological study. London: Chapman & Hall, 1955