1. Wren, T. A., Rethlefsen, S., & Kay, R. M. (2005). Prevalence of specific gait abnormalities in children with cerebral palsy: influence of cerebral palsy subtype, age, and previous surgery. Journal Of Pediatric Orthopaedics., 25(1), 79–83.
2. Sutherland, D. H., & Davids, J. R. (1993). Common gait abnormalities of the knee in cerebral palsy. Clinical Orthopaedics and Related Research, 288, 139–147.
3. Rozumalski, A., & Schwartz, M. H. (2009). Crouch gait patterns defined using k-means cluster analysis are related to underlying clinical pathology. Gait & Posture, 30(2), 155–160.
4. Kanashvili, B., Miller, F., Church, C., Lennon, N., Howard, J. J., Henley, J. D., Niiler, T., Sees, J. P., Rogers, K. J., & Shrader, M. W. (2021). The change in sagittal plane gait patterns from childhood to maturity in bilateral cerebral palsy. Gait & Posture., 90, 154–160.
5. Arnold, A. S., Liu, M. Q., Schwartz, M. H., Ounpuu, S., & Delp, S. L. (2006). The role of estimating muscle-tendon lengths and velocities of the hamstrings in the evaluation and treatment of crouch gait. Gait & Posture, 23(3), 273–281.