1. 1931 Histopathology of nerve cells?Cytology and Cellular Pathology of the Nervous System. W. Penfield, p. 145.
2. Über die nervösen Endorgane im häutigen Labyrinth der Säugetiere
3. 1928 Degeneration and Regeneration of the Nervous System. Vol. 2, chap. I, II, III. Translated by R. M. May.
4. Correlations of histologic observations and the acuity of hearing