Dwight Duffus, Bill Sands, Robert E. Woodrow. On the chromatic number of the product of graphs. Journal of Graph Theory, 9(4):487-495, 1985. [doi]
@article{DuffusSW85,
title = {On the chromatic number of the product of graphs},
author = {Dwight Duffus and Bill Sands and Robert E. Woodrow},
year = {1985},
doi = {10.1002/jgt.3190090409},
url = {http://dx.doi.org/10.1002/jgt.3190090409},
researchr = {https://researchr.org/publication/DuffusSW85},
cites = {0},
citedby = {0},
journal = {Journal of Graph Theory},
volume = {9},
number = {4},
pages = {487-495},
}