Issue No.01 - January (1978 vol.27)
H. Butin , Thomson-CSF
In addition to the automorphism between the sequency and the Gray-code-of-sequency ordering for Walsh functions there is also one for Kacsmarz ordering. This is shown by using a matrix definition suggested by K. W. Henderson some years ago .
Walsh matrix, Sequency, Walsh?Kacsmarz functions
H. Butin, "On an Ordering of Walsh Functions", IEEE Transactions on Computers, vol.27, no. 1, pp. 87-90, January 1978, doi:10.1109/TC.1978.1674958