Wongwatthananart, S., R. Bhidayasiri, and S. Khongprasert. “EFFECTS OF LASER LIGHT VISUAL CUEING ON FREEZING OF GAIT AND FIRST STEP LENGTH IN PATIENTS WITH PARKINSON’S DISEASE”. Journal of Sports Science and Health, vol. 24, no. 2, Aug. 2023, pp. 142-5, https://he02.tci-thaijo.org/index.php/spsc_journal/article/view/262972.