1. Bishop, Y. M. M., Fienberg, S. E., Holland, P. W.: Discrete multivariate analysis: Theory and practice. London: MIT Press 1975
2. Breed, W.: Occupational mobility and suicide among white males. Am. Soc. Rev.28, 179?188 (1963)
3. Causes of death in the Kingdom of Denmark 1973. The National Health Service of Denmark, Copenhagen, 1975. (With a Summary in English)
4. Døssing, M.: Arbejdsløsheden og lægernes ansvar. Ugeskr. Læger138, 1427?1428 (1976)
5. Eisenberg, P., Lazarsfeld, P.: The psychological effects of unemployment. Psychol. Bull.35, 358?390 (1938)