1. Brousseau, K.: Mongolism: A Study of the Physical and Mental Characteristics of Mongolian Imbeciles, revised by BRAINERD, H.G. Baltimore: Williams & Wilkins Co., 1928, pp 61-64.
2. Benda, C.E.: Mongolism and Cretinism, New York: Grune & Stratton, 1940, pp 20-24.
3. Oral aspects of mongolism
4. Periodontal Disease in Mongols
5. Dental and Facial Characteristics in Down's Syndrome (Mongolism)