1. Abrecht J, Biino GG, Mercolli I, Stille P (1991) Mafic-ultramafic rock associations in the Aar, Gotthard und Tavetsch massifs of the Helvetic domain in Central Swiss Alps: markers of ophiolitic pre-Variscan sutures, reworked by polymetamorphic events? Schweiz Mineral Petrogr Mitt 71: 295?300
2. Arnold A (1970) Die Gesteine der Region Nalps-Curnera im nordöstlichen Gotthardmassiv, ihre Metamorphose und ihre Kalksilikatfels-Einschlüsse (Petrographische Untersuchungen im Bereich der Anlagen der Kraftwerke Vorderrhein). Beitr Geol Karte Schweiz NF 138: 128
3. Balashov YA, Dmitriev L V, Sharaskin AY (1970) Distribution of rare earths and yttrium in bed rocks of the oceanic floor. Geokhimiya 6: 647?660
4. Barnes I, O'Neil JR (1969) The relationship between fluids in some fresh alpine-type ultramafics and possible modern serpentinization, western United States. Geol Soc Am Bull 80: 1947?1960
5. Biino GG (1993) Thermobarometric calculations in polymetamorphic mafic rocks: a case history from the Gotthard massif (Central Swiss Alps). Terra abstracts 5: 399