Irena Rusu. Perfect and locally perfect colorings. Journal of Graph Theory, 20(4):501-512, 1995. [doi]
@article{Rusu95-0, title = {Perfect and locally perfect colorings}, author = {Irena Rusu}, year = {1995}, doi = {10.1002/jgt.3190200413}, url = {http://dx.doi.org/10.1002/jgt.3190200413}, researchr = {https://researchr.org/publication/Rusu95-0}, cites = {0}, citedby = {0}, journal = {Journal of Graph Theory}, volume = {20}, number = {4}, pages = {501-512}, }