Kevin T. Phelps, Mike LeVan. Nonsystematic Perfect codes. SIAM J. Discrete Math., 12(1):27-34, 1999. [doi]
@article{PhelpsL99,
title = {Nonsystematic Perfect codes},
author = {Kevin T. Phelps and Mike LeVan},
year = {1999},
url = {http://epubs.siam.org/sam-bin/dbq/article/31220},
researchr = {https://researchr.org/publication/PhelpsL99},
cites = {0},
citedby = {0},
journal = {SIAM J. Discrete Math.},
volume = {12},
number = {1},
pages = {27-34},
}