Gross, M. J., Hall, R., Bringer, J. D., Cook, C. J., Kilduff, L. P., Shearer, D. A. Julkaisussa Journal of Sport Psychology in Action (2017)
John, S., Verma, S. K., Khanna, G. L. Julkaisussa National Journal of Integrated Research in Medicine (2011)
Groslambert, A., Candau, R., Grappe, F., Dugue, B., Rouillon, J. D. Julkaisussa Research Quarterly for Exercise and Sport (2003)