Reference

Wolfgang Frisch, Uwe Ring, Sören Dürr, Susanne Borchert, Daniel Biehler (1994): The Arosa Zone and Platta Nappe Ophiolites (Eastern Swiss Alps): Geochemical Characteristics and their Meaning for the Evolution of the Penninic Ocean – Jahrbuch der Geologischen Bundesanstalt – 137: 19 - 33.