Rizzone, K. H., Ackerman, K. E., Roos, K. G., Dompier, T. P., Kerr, Z. Y. Julkaisussa Journal of Human Sport & Exercise (2017)
Swartz, T. B., Arce, A. Julkaisussa International Journal of Sports Science and Coaching (2014)
Jones, M. B. Julkaisussa Psychology of Sport and Exercise (2014)
Pollard, R., Pollard, G. Julkaisussa Journal of Sports Sciences (2005)