Pics
http://www.shutterstock.com/portfolio/search.mhtml?gallery_username=chudakov&gallery_landing=1&page=1&safesearch=1&sort_method=newest
http://www.wayneflannavalancheblog.com/2011_12_11_archive.html
http://www.cnfaic.org/site/wp-content/uploads/2015/03/sluff-1024x701.jpg
http://juneauempire.com/outdoors/2012-02-17/different-avalanche-types-present-their-own-challenges
http://www.alaskasnow.org/education/courses/more-training/

Avalanche Info
http://www.cnfaic.org/


Physics Info
Knight, Randall Dewey. Physics for Scientists and Engineers: A Strategic Approach. 3rd ed. Pearson/Addison Wesley, 2004. Print.