1. A model for analyzing human adaptation to transition;Schlossberg;The Counseling Psychologist,1981
2. Symptoms of a crisis-transition: A grounded theory study;Stambulova,2003
3. A conceptual model of adaptation to retirement among athletes;Taylor;Journal of Applied Sport Psychology,1994
4. Principles of mental physiology with their applications to training and the discipline of mind and the study of its morbid conditions;Carpenter,1874
5. Electrical measurement of neuromuscular states during mental activities;Jacobson;American Journal of Physiology,1930