1. The need for an operational definition of burnout;Brill;Fam Commun Health,1984
2. Understanding burnout: definitional issues in analyzing a complex phenomenon;Maslach,1982
3. The Stress of Life;Selye,1976
4. Professional Burnout in Human Service Organizations;Cherniss,1980
5. Burnout: The High Cost of High Achievement;Freudenberger,1980