Gambetta, V. Julkaisussa Modern Athlete & Coach (2013)
Klarica, A. Julkaisussa Modern Athlete & Coach (2011)
Lynch, M., Mallett, C. Julkaisussa Modern Athlete & Coach (2006)
Saunders, R. Julkaisussa Modern Athlete & Coach (2003)
Hannan, P. Julkaisussa Modern Athlete & Coach (2003)
Launder, A. Julkaisussa Modern Athlete & Coach (2004)