1. Oppenheim H.: Diseases of the Nervous System. 2nd American Edition. Translated by Mayer E. E., J. B. Lippincott & Co., Philadelphia, 1904, page 316.
2. Bell CharlesSir: The Nervous System of the Human Body. Stereotyped by Duff Green, Washington, 1833, page 178 (Syphilis, Paralysie du Nerf facial).
3. THE RECURRENCE OF FACIAL PARALYSIS