1. Bell Laboratories Record, November, 1955; 434.
2. PV Founders and Award Luncheon, 18th Photovoltaic Specialists Conference, Las Vegas, 21-25 October 1985 (contributions from G.L. Pearson and M.B. Prince).
3. The Solar Battery
4. . From Space to Earth. AATEC Publications: Ann Arbor, Michigan, 1999.