1. POLYCRYSTALLINE THIN FILM SOLAR CELLS:Present Status and Future Potential
2. D. Bonnet, Proceedings of the 14th European Photovoltaic Solar Energy Conference, 30 June–4 July 1997, Barcelona, Spain.
3. N. Romeo, A. Bosio, R. Tedeschi, V. Canevari, Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, 6–10 July 1997, Vienna, Austria.
4. M.E. Oszan, D.R. Johnson, S. Oktik, M.H. Patterson, D. Sivapathasundaram, J.M. Woodcock, Proceedings of the 12th European. PVSC, 11–15 April, Amsterdam, The Nederlands.
5. A.Romeo, H. Zogg, A.N. Tiwari, Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, 6–10 July 1997, Vienna, Austria.