1. The mineralogy of the feldspars;Alling;J. Geol.,1921
2. Some petrologic observations in the “rock forest” of central Peru;Amstutz;Schweitz. Mineral. Petrog. Mitt.,1956
3. The polimorphism of MgSiO3 and solid-state equilibria in the system MgSiO3CaMgSi2O6;Atlas;J. Geol.,1952
4. Physical properties of some typical foundation rocks;Balmer;U.S. Bur. Reclamation, Concrete Lab. Rept., SP-39,1963
5. Structure of metals;Barrett,1952