1. Studien über Krebsentstehung
2. Quoted by Jaffé, Anat. u. Path. Spontanerkrank der kleinen Labtiere, 1931, p. 772.
3. CLASSIFICATION OF FOUR THOUSAND EXPERIMENTAL OIL AND TAR SKIN TUMOURS OF MICE.
4. Fourth Scientific Report of the Imp. Cancer Res. Fund, 1911, p. 114.