1. Lewis and Hubbard , “The Mechanisms and Prognostic Aspects of the Manic-Depressive Schizophrenic Combination,” vol. on Manic Depressive Psychosis, already quoted.
2. Lewis A. J. , “Melancholia: A Clinical Survey of Depressive States,” Journ. Ment. Sci., April, 1934.
3. Medow (quoted Fünfgeld op. cit.).
4. Halban (quoted Jacobi , op.cit.).
5. Hoffman and Berze (quoted Fünfgeld op. cit.).