1. Cobb JR Outline for the study of scoliosis. Am Acad Orthop Surgeons Instructional Course Lectures 1948;5:261.
2. Instrument for measuring the Cobb angle in scoliosis;Whittle;Lancet,1979
3. The study and treatment of scoliosis;Ferguson;South Med J,1930
4. La Scoliose—son etude tridimensionnelle;Perdriolle,1979
5. A study of vertebral rotation;Nash;J Bone Joint Surg,1969