1. The Hoxan Guide to Solar Electricity;Hoxan Staff,1993
2. The Kyocera Guide to Solar Systems;Kyocera Staff,1993
3. The Photocomm Guide to PV Solar Systems;Photocomm Staff,1993
4. The Siemens Guide to PV Solar Systems;Siemens Staff,1993
5. The Solarex Guide to Solar Electricity;Solarex Staff,1993