Augestad, P., Telseth, F. Julkaistu 2021 “...educational training...”
Andersen, T. L. Julkaisussa Scandinavian Sport Studies Forum (2020) “...educational training...”
Oliversen, S. S. Julkaistu 2013 “...educational training...”
Hoye, M. Julkaistu 2010 “...educational training...”
Roaldset Bjerkeli, M., Veum, A. Julkaisussa Skisport (2006) “...educational training...”