1. Radiation Instruments and Measurements;Drummond,1958
2. Fundamental Pyrheliometry;Drummond;Sun at Work,1958
3. Solar Cell Measurement Standardization;Spitzer;Lockheed Aircraft Corporation, Missiles and Space Division, Report No. LMSD-288184,1960
4. A New Silicon p-n Junction Photocell for Converting Solar Radiation into Electrical Power;Chapin;Jnl. App. Phys.,1954
5. Electricity from the Sun;Pearson,1956