References
- Apley A. G. Deformities of the knee. System of orthopaedics and fractures 5th ed., A. G. Apley. Butterworths, London, Boston 1977; 260–263
- Salenius P., Vankka E. Development of the tibiofemoral angle in children. J. Bone Joint Surg. 1975; 57-A: 259–261
- Sharrard W. J. W. Valgus and varus deformities of the knee. Paediatric orthopaedics and fractures 2nd ed., W.J.W. Sharrard. Blackwell Scientific Publications, Oxford, London, Edinburgh, Melbourne 1979; 451–461