1. A modified technique for ligating impacted canines;Ziegler;Am. J. Orthod.,1977
2. Oral pathology;Thoma,1944
3. Management of impacted canines;Bishara;Am. J. Orthod.,1976
4. Management of orthodontic treatment when first premolars are substituted for canines;Sims;Angle Orthod.,1977
5. Wheeler, R. C.: A textbook of dental anatomy and physiology, ed. 4, Philadelphia, W. B. Saunders Company, pp. 163, 185.