Sjödin, Fredrik, Hanno Felder, Stefan Holmström, and Martin Fahlström. 2024. “Hearing the Roar: Spectator Noise and Umpires Stress in Major Badminton Tournaments”. International Journal of Racket Sports Science 5 (1), 57-64. https://journal.racketsportscience.org/index.php/ijrss/article/view/109.