1. M. Wolf: Energy Convers. 11, 63–73 (1971)
2. H.J. Hovel: “Solar Cells”, in Semiconductor und Semimctuls, Vol. 11, ed. by R. K. Willardson, A.C. Beer (Academic Press, New York 1975)
3. P.M. Dunbar, J.R. Hauser: Solid-State Electron 20, 697–701 (1971)
4. H.Fischer, W.Pschunder:FinalReport: “Experimentalstudie Si-Solarzelle”.BM FT Forschungsbericht RVI 1-TO-4/71 (1973)
5. W. R. Runyan: Final Rcpt., NASA Grant NGR 44-007-016. Southern Methodist University (1968)