Vanwala, J. J., S. Diwan, S. Shah, and N. Vyas. “Effect of Ankle Foot Orthosis on Energy Expenditure Index and Gait Speed in Spastic Cerebral Palsy Children: An Observational Study”. International Journal of Contemporary Pediatrics, vol. 1, no. 1, Feb. 2017, pp. 17-19, https://www.ijpediatrics.com/index.php/ijcp/article/view/567.