References
- American Association of Orthodontists Bulletin, November 1982, Vol. 1, No. 2.
- Postlethwaite, K. M. (1989) The range and effectiveness of safety headgear products, European Journal Orthodontics, 11, 228–234.
- Samuels, R. H. A. and Jones, M. L. (1994) Orthodontic facebow injuries and safety equipment, European Journal Orthodontics, 16, 385–394.