H. Hübner, H. Kremer, K. O. Linn, W. Schwering. Algorithm 389: Binary ordered Walsh functions. Communications of the ACM, 13(8):511, 1970. [doi]
@article{HubnerKLS70,
title = {Algorithm 389: Binary ordered Walsh functions},
author = {H. Hübner and H. Kremer and K. O. Linn and W. Schwering},
year = {1970},
doi = {10.1145/362705.362716},
url = {http://doi.acm.org/10.1145/362705.362716},
researchr = {https://researchr.org/publication/HubnerKLS70},
cites = {0},
citedby = {0},
journal = {Communications of the ACM},
volume = {13},
number = {8},
pages = {511},
}