1. Alarcon, R. de, 1969, The spread of heroin in a community. Bulletin on Narcotics, 21: 17.
2. Badura, B. (ed.), 1981, “Soziale Unterstützung und chronische Krankheit. Zum Stand sozialepidemiologischer Forschung”, Suhrkamp, Frankfurt/M.
3. Bott, E., 1957, “Family and social network. Roles, norms and external relationships in ordinary urban families”, Tavistock, London.
4. Brown, G.W., Birley, J.L.T., and Wing, J.K., 1972, Influence of family life on the course of schizophrenic disorders: a replication. British Journal of Psychiatry, 121: 241.
5. Brown, G.W., and Harris, T., 1978, “Social origins of depression”, Tavistock, London.