1. Gull, S. F. & Daniell, G. J. Nature 272, 686–690 (1978).
2. Benjamin, R. IEE Proc. F127, 341–353 (1980).
3. Oppenheim, A. V. & Schafer, R. W. Digital Signal Processing, Ch. 3 (Prentice-Hall, New Jersey, 1975).
4. Jaynes, E. T. IEEE Trans. SSC- 4, 227–241 (1968).
5. Ramachandran, G. N. & Srinivasan, R. Fourier Methods in Crystallography (Wiley–Interscience, New York, 1970).