Amanda G. Chetwynd, Anthony J. W. Hilton, Dean G. Hoffman. On the Delta-subgraph of graphs which are critical with respect to the chromatic index. Journal of Combinatorial Theory, Series A, 46(2):240-245, 1989. [doi]
@article{ChetwyndHH89, title = {On the Delta-subgraph of graphs which are critical with respect to the chromatic index}, author = {Amanda G. Chetwynd and Anthony J. W. Hilton and Dean G. Hoffman}, year = {1989}, doi = {10.1016/0095-8956(89)90045-2}, url = {http://dx.doi.org/10.1016/0095-8956(89)90045-2}, tags = {graph-rewriting, rewriting}, researchr = {https://researchr.org/publication/ChetwyndHH89}, cites = {0}, citedby = {0}, journal = {Journal of Combinatorial Theory, Series A}, volume = {46}, number = {2}, pages = {240-245}, }