1. Ask-Upmark, E.: Life and death without ovaries. Acta med. scand.172, 129–135 (1962).
2. Ayd, F. J.: Current status of the major antidepressants. Amer. psychiat. Ass. Psychiat. Res. Rep. 213–216 (1959).
3. Bowlby, J.: Personality and mental illness. London: Kegan Paul, Trench, Trubner & Co. Ltd. 1940.
4. —: Separation anxiety. Int. J. Psycho-Anal.41, 89–113 (1960).
5. Clyde, D. J.: Manual for the Clyde Mood Scale. Biometric Laboratory University of Miami, Coral Gables, Fla. 1963.