1. Aanonsen, A.: Shiftwork and health. Universitetsforlaget, Oslo 1964
2. Akerstedt, T.: Shift work and health?Interdisciplinary aspects. In: Shift work and health, P. G. Rentos, R. D. Shepard (eds.), pp. 179?197. US Department of Health, Education, and Welfare HEW Publication No. (NIOSH), 76-203, Washington, DC 1976
3. Akerstedt, T., Torsvall, L.: Experimental changes in shift schedules-their effects on well-being. Ergonomics21, 849?856 (1978) Andersen, J. E.: The main results of the Danish medico-psycho-social investigation of shiftworkers. Proceedings of the XII. International Congress on Occupational Health, Helsinki, July l?6, 1957, Vol. III, pp. 135?136. Helsinki 1958
4. Andersen, J. E.: F�lgerne of skifteholdsarbejde. Nord. Med.63, 754?755 (1960)
5. Andlauer, P., Metz, B.: Le travail en �quipes alternantes. In: Physiologie du travail?ergonomie, J. Scherrer (ed.), Tome II, pp. 272?281. Paris: Masson 1967