Grigg, J., E. Haakonssen, R. Orr, and J. W. Keogh. “Literature Review: Kinematics of the BMX SX Gate Start”. Journal of Science and Cycling, vol. 6, no. 1, June 2017, pp. 3-10, https://www.jsc-journal.com/index.php/JSC/article/view/249.