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Rufli, Heinrich; Stauffer, Bernhard; Oeschger, Hans (1976). Lightweight 50-meter core drill for firn and ice. In: Splettstoesser, John F. (ed.) Ice-Core Drilling (pp. 139-153). University of Nebraska Press
Schwander, Jakob; Rufli, Heinrich (1994). Electromechanical drilling of a 300 m core in a dry hole at Summit, Greenland. Memoirs of National Institute of Polar Research. Special Issue, 49, pp. 93-98. National Institute of Polar Research
