Haim, H. Julkaisussa 3rd International Congress on Science and Nordic Skiing - ICSNS 2015. 5-8 June 2015, Vuokatti, Finland (2015) “...educational training...”
Ene-Voiculescu, C., Ene-Voiculescu, V. Julkaisussa 4th International Congress on Science and Skiing (2007) “...educational training...”