Lind, Dave and Sanders, Scott P. The Physics of Skiing: Skiing at the Triple Point. AIP Press, New York, 1996.

http://www.hesston.edu/academic/faculty/nelsonk/PhysicsResearch/Ski/paper.htm
http://www.active.com/story.cfm?story_id=8520
http://www.sierranordic.com/Tech_tip_two.html
http://www.physicsclassroom.com/mmedia/energy/se.html
http://www.its.caltech.edu/~atomic/snowcrystals/
http://www.home.eznet.net/~vraguso/Book_2/Snow.html
http://www.sinc.sunysb.edu/Stu/cbrody/skiing.htm

Background from: http://www.hesston.edu/academic/faculty/nelsonk/PhysicsResearch/Ski/paper.htm