1. Geological investigations in east Greenland, Part III. Petrology of the Skaergaard intrusion, Kangerdlugssuaq, east Greenland;Wager;Medd. om Grønland,1939
2. Chemical composition and optical properties of common clinopyroxenes, Part I;Hess;Amer. Min.,1949
3. The Tertiary igneous rocks of Skye;Harker;Mem. Geol. Surv.,1904
4. Determination of extinction angles in augite and hornblende with the universal stage according to the method of Conrad Burri
5. The clinopyroxenes of the Skaergaard intrusion, eastern Greenland;Muir;Miner. Mag.,1951