Paul A. Catlin. The reduction of graph families closed under contraction. Discrete Mathematics, 160(1-3):67-80, 1996. [doi]
@article{Catlin96, title = {The reduction of graph families closed under contraction}, author = {Paul A. Catlin}, year = {1996}, doi = {10.1016/0012-365X(95)00150-U}, url = {http://dx.doi.org/10.1016/0012-365X(95)00150-U}, tags = {graph-rewriting, rewriting}, researchr = {https://researchr.org/publication/Catlin96}, cites = {0}, citedby = {0}, journal = {Discrete Mathematics}, volume = {160}, number = {1-3}, pages = {67-80}, }