Iiro S. Honkala. On the normality of multiple covering codes. Discrete Mathematics, 125(1-3):229-239, 1994. [doi]
@article{Honkala94-0,
title = {On the normality of multiple covering codes},
author = {Iiro S. Honkala},
year = {1994},
doi = {10.1016/0012-365X(94)90164-3},
url = {http://dx.doi.org/10.1016/0012-365X(94)90164-3},
researchr = {https://researchr.org/publication/Honkala94-0},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {125},
number = {1-3},
pages = {229-239},
}