1. Clinical and electromyographic study of seven spastic children with internal rotation gait;Sutherland;J. Bone Joint Surg.,1969
2. The assessment of the internal rotation gait in cerebral palsy: an electromyographic gait analysis;Chong;Clin. Orthop.,1978
3. Management of the hip in cerebral palsy;Hoffer;J. Bone Joint Surg.,1986
4. Treatment of hip problems in cerebral palsy;Root;Inst. Course Lect.,1987
5. Pediatric Orthopedics;Tachdjian,1990