@article{DavOst:linear,
author = {Alexander A. Davydov and Patric R.J. \"Osterg\aard},
journal = {{IEEE} Transactions on Information Theory},
number = {1},
pages = {416--421},
title = {Linear codes with covering radius $R=2,3$ and codimension $tR$},
volume = {47},
year = {2001},
}