Leeyang, P. ., S. . Woravutrangkul, and N. . Charoenpanich. “KINEMATIC ANALYSIS OF UNDERWATER UNDULATORY SWIMMING PHASE AFTER A TRACK START”. Journal of Sports Science and Health, vol. 21, no. 1, Apr. 2020, pp. 84-96, https://he02.tci-thaijo.org/index.php/spsc_journal/article/view/241474.