1. El Meteorite del Chaco;Alvarez,1926
2. Measurement of the metal content of naturally occurring, metal-deficient, hexagonal pyrrhotite by an X-ray spacing method;Arnold;Amer. Min.,1962
3. The polymorphism of MgSiO3 and solid state equilibria in the system MgSiO3-CaMgSi2O6;Atlas;J. Geol.,1052
4. Electron Probe Microanalysis;Birks,1963
5. Meteorites and Craters of Campo del Cielo, Argentina;Cassidy;Science,1966