Quantitying snow conditions of World Cup alpine ski racing tracks - Wolfsperger, F.; Hinterberger, B.; Christian, J.; Matzl, M.; Jahnel, R.; Spörri, J.; Kröll, J.; Gilgien, M.; Rhyner, H.; Schneebeli, M.; Müller, E. (Abstract Book of the 6th International Congress on Science and Skiing, December 14 - 19, 2013 St. Christoph am Arlberg - Austria, 2013)