1. See e.g. Conf. Proc. Internat. Workshop CdS-Cu2S Solar Cells and Other Abrupt Heterojunctions, Delaware, April 1975, NSF-RANN-AER-75–15858.
2. , , , and , Final Rep., Contract No. AF33(615)−5224, June 1966 to May 1969.
3. Photovolatic effect in CdS-Cu2S heterojunctions
4. Proc. 12th IE,1976
5. see [1] (p. 159 and 194);