| | |
@article{DBLP:journals/dm/CizekK94,
author = {Niko Cizek and
Sandi Klavzar},
title = {On the chromatic number of the lexicographic product and
the Cartesian sum of graphs},
journal = {Discrete Mathematics},
volume = {134},
number = {1-3},
year = {1994},
pages = {17-24},
ee = {http://dx.doi.org/10.1016/0012-365X(93)E0056-A},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
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