1. Cobb, J., Outline for the study of scoliosis. Ar. Acad. Orthop. Surg. Instr. Course Lect. 5:261–175, 1948.
2. Nash, C., and Moe, J., A study of vertebral rotation. J. Bone Jt. Surg. Am. 51:223–229, 1969.
3. Jeffries, B. F., et al., Computerized measurement and analysis of scoliosis. Pediatr. Radiol. 134:381–385, 1980.
4. Arthur, A., et al., A clinical study of the differences between the scoliotic angles measured on poster anterior and antero posterior radiographs. J. Bone Jt. Surg. 64(A):489–493, 1982.
5. Pruijis, J. E. H., et al., Variation in Cobb angle measurements in scoliosis. Skelet. Radiol. 23:517–520, 1994.