[
Begg, P. R., and Resting, P. C.: Begg orthodontic theory and technique, Philadelphia, 2nd ed., 1971, W. B. Saunders Company.
]Search in Google Scholar
[
Brouwer, H.: Clinical treatment with the Begg appliance, Am. J. Orthod. 63: 271-291, 1973.
]Search in Google Scholar
[
Kitchton, J. F.: The Kitchton torquing auxiliary, J. Pract. Orthod. 1: 72-73, 1967.
]Search in Google Scholar