1. Z.J. Lipowski, Psychosomatic medicine in a changing society: some current trends in theory and research, Comprehensive Psych. 14: 203–215 (1973).
2. A. Kagan and L. Levi, Adaptation of the psychosocial environment to man’s abilities and needs, in: “Society, Stress and Disease,” Vol. I, pp. 399–404, Oxford University Press, London (1971).