George N. Patterson, « Recent Chinese Policies in Tibet and towards the Himalayan Border States », The China Quarterly, vol. 12, no 12, 1962, p. 191–202
728 : « The misleading term sherpa, written with a lower case s, is often used to describe a Himalayan guide or porter, but it does not necessarily indicate
really the tower. » (en) Watching the Watchtowers. Frederique Darragon's Himalayan Mission, in China Pictorial, vol. 691, January 2006, pp. 18-19 : « Carbon
Studies, University of London, 75 (1), pp. 190-192 : « The melting of the Himalayan glaciers, although bad, will not generally endanger Asia’s water supply
Admits Mistake on Himalayan Glaciers Warning, Jonathan Leake and Chris Hastings, The Times, 20 janvier 2010 World misled over Himalayan glacier meltdown