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Heritsch, Franz (1929). The Nappe Theory in the Alps (Alpine Tectonics, 1905-1928). Translated by PGH Boswell. London: Methuen, 228pp. Methuen.
Sloan, Robert E (2002). Geological Guidebook to Zermatt. Zermatt: Association of the Alpine Museum of Zermatt, 63pp. Zermatt Museum.
