Esposito, G., R. Ceruso, F. D’Elia, and T. D’Isanto. “Performance Anxiety: How to Play Reliable and Rational Tennis by Reducing Mental Pressure”. Journal of Human Sport and Exercise, vol. 15, no. 2proc, May 2020, pp. S213-S221, doi:10.14198/jhse.2020.15.Proc2.12.