Shaerer, Peter: The Avalanche Handbook, The Mountaineers: 2006. ISBN 978-0-89886-809-8 Tremper, Bruce: Staying Alive in Avalanche Terrain, The Mountaineers:...
The Avalanche Handbook. The Mountaineers Books. pp. 49–51. ISBN 978-0-89886-809-8. Retrieved July 7, 2009. California Data Exchange Center (2007). "Depth...
(2006). The Avalanche Handbook. The Mountaineers Books. pp. 72–. ISBN 978-0-89886-809-8. Archived from the original on 2016-05-06. West, Bruce; Mauro Bologna...