Susanne Wymann von Dach, Fani Kakridi Enz, Hermann Kreutzmann, Jim Ellis-Jones, John R. Haslett, Martin Price, John M. Reynolds, Peter J. Taylor, Gregory Knapp, Bernard Henin, Peter M. Brown, Don Funnell
Mountain Research and Development 24 (3), 266-279, (1 August 2004) https://doi.org/10.1659/0276-4741(2004)024[0266:ROWSCR]2.0.CO;2