D. Pons, I. Balaguer, and M. L. García-merita, “Is the breadth of individualized ranges of optimal anxiety (IZOF) equal for all athletes? A graphical method for establishing IZOF”., Span. j. psychol., vol. 4, no. 1, p. 3, Jan. 2001, Accessed: Dec. 22, 2024. Available: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0101120003A