1. Basic Photovoltaic Principles and Methods 1984
2. U.S. Department of Energy Report 1988 DOE/CH10093
3. U.S. Department of Energy Report 1987 DOE/CH10093-H3
4. U.S. Department of Energy Report 1989 DOE/CH10093-4
5. U.S. Department of Energy Report 1987 DOE/CH10093-7