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W. B. Downs (1948) Variations in facial relationships. Their significance in treatment and prognosis. American Journal of Orthodontics, 34: 812–840.
M. L. Jennes (1964) Corrective nasal surgery in children. Archives of Otolaryngology, 79: 145–151.
M. L. Moss , B. E. Bromberg , I. C. Song , and G. Eisenman (1968) The passive role of nasal septal cartilage in mid-facial growth. Plastic and Reconstructive Surgery, 41: 536–542.