1. and , Technical Report 67305. Royal Aircraft Establishment, Ministry of Technology, Farmsborough, Hants, U. K. (1967).
2. Proc. Internat. Congress on the Sun in the Service of Mankind, Paris, July 2–6, 1973 (p. 111).
3. Drift fields in photovoltaic solar energy converter cells
4. , , , , , and , Proc. Internat. Congress on the Sun in the Service of Mankind, Paris, July 2–6, 1973 (p. 61).