References
- Jarabak and Fizzell. Technique and Treatment with the light wire appliance. C. V. Mosby Company. St. Louis, 1963. P. 341/5, 372, 416.
- Begg, P. R. Begg Orthodontic Theory and Technique. Philadelphia. W. B. Saunders Company. 1965. P. 88/102.