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2. J. Lindmayer and J. F. Allison. 1972. 9th. IEEE Photovoltaic Spec. Conf. Proc. New York: IEEE, 83.
3. J. R. McCormick. 1980. I4th IEEE Photovoltaic Spec. Conf. Proc. New York: IEEE, 298.
4. G. M. Storti. 1981.15th IEEE Photovoltaic Spec. Conf. Proc. New York: IEEE, 442.
5. J. Grenier. Private communication. These figures are prices, and not costs; the 1985 figure is typical of the upper limit of European expectations and may be considered as conservative. However, U.S. Department of Energy expectations for 1982 ($6 to 13/W system price, including $2.80/W module price) have not been confirmed in practice.