Laczkó, T., P. Ács, M. Stocker, and D. Paár. “Consumption Habits and Economic Impact of Liebherr 2019 ITTF World Table Tennis Championships”. International Journal of Racket Sports Science, Vol. 2, no. 2, Dec. 2020, pp. 37-46, https://journal.racketsportscience.org/index.php/ijrss/article/view/19.