1. Protoenstatite solid solution in the system CaOMgOAl2O3SiO2;Biggar;Lithos,1972
2. A comparison of gel and glass starting materials for phase equilibria studies;Biggar;Mineralog. Mag.,1969
3. Maria lavas, mascons, layered complexes, achondrites, and the lunar mantle;Biggar,1972
4. Lunar lavas and the achondrites: petrogenesis of protohypersthene basalts in the maria lava lakes;Biggar,1971
5. The system MgSiO3CaMgSi2O6;Boyd;Jour. Petrology,1964