1. Ahmed, N., Milne, P. J. andHarris, S. G. (1975) Electrocardiographic data compression via orthogonal transforms.IEEE Trans.,BME-22, 484–487.
2. Brown, R. D. (1977) A recursive algorithm for sequency-ordered fast Walsh transforms.IEEE Trans.,C-26, 819–823.
3. Cox, J. R., Nolle, F. M. andArthur, R. M. (1972) Digital analysis of the electroencephalogram, the blood pressure wave and the electrocardiogram.Proc. IEEE,60, 1137–1154.
4. Gold, C. (1977) Real-time computation of e.m.g. power density spectra by fast Walsh-Hadamard transformation. Proceedings of fith New England Bioengineering Conference, 166–170.
5. Graham, M. (1976) Latent components in the electrocardiogram.IEEE Trans.,BME-23, 220–224.