1. An Updte on Performance Trends at PVUSA;Townsend;SERI/CP-4079,1990
2. Three-year Performance and Reliability Analysis of a 4 kW Amorphous SIlicon Photovoltaic System in Michigan;Pratt;SERI/CP-4079,1990
3. Proc. 21st IEEE PV Specialists Conference;Ichikawa,1990
4. 21st IEEE PV Specilists Conf. Proc.;Jennings,1990