Stay Safe on Snow with www.ski-injury.com, 18 Nov 2013 http://www.springer.com/alert/urltracking.do?id=L4090a3cMda0214Sb07e093
International Society for Skiing Safety, 18 Nov 2013 http://www.springer.com/alert/urltracking.do?id=L4090a3cMda0214Sb07e093