@article{bks-dgmdecmr-04
, author = {S.N. Bereg and A.V. Kelarev and A. Salagean}
, title = {Directed Graphs and Minimum Distances of Error-Correcting Codes in
Matrix Rings}
, journal = {New Zealand Journal of Mathematics}
, year = {2004}
, volume = {33}
, pages = {113--119}
, url = {http://www.math.auckland.ac.nz/NZJM}
}