1. Adler, A: 1929, “The Science of Living,” Greenburg, New York.
2. Averill, J. R.: 1973, Personal control over aversive stimuli and its relationship to stress, Psychol. Bull., 80: 286.
3. Ball, T. S., and Vogler, R. E.: 1971, Uncertain pain and the pain of uncertainty, Percept. Motor Skills, 33: 1195.
4. Baron, R., and Rodin, J.: 1978, Perceived control and crowding stress, in: “Advances in Environmental Psychology,” A. Baum, J. E. Singer, and S. Valins, eds., Erlbaum, Hillsdale, NJ.
5. Birren, J.: 1958, Aging and psychological adjustment, Rev. Ed. Res., 28: 475.