1. Tachdjian's pediatric orthopaedics. 3rd ed;Herring,2002
2. Atlas of pediatric orthopaedic surgery. 3rd ed;Morrissy,2001
3. Lovell and Winter's pediatric orthopaedics. 5th ed;Renshaw,2001
4. Lovell and winter's pediatric orthopaedics. 3rd ed;Rang,1990
5. Forefoot problems in cerebral palsy: diagnosis and management;Bleck;Foot Ankle,1984