1. The basal gneisses and basement contact of the Hestebrepiggan area, North Jotunheimen, Norway;Banham;Nor. geol. Unders,1968
2. Geology of the Hestebrepiggan area. Preliminary account;Banham;Nor. geol. Tidsskr.,1965
3. Preliminary results of a geological investigation in west Jotunheimen, Norway;Barkey;Nor. geol. Tidsskr.,1970
4. Progressive metamorphism of Sparagmite rocks of southern Norway;Barth;Nor. geol. Tidsskr.,1938
5. Barth T. F. W. (1952) Theoretical Petrology (J. Wiley & Sons Inc, New York and London), 2nd. ed. p 416.