Matthew M. Cropper, John L. Goldwasser. Restricted list coloring and Hall s condition. Discrete Mathematics, 249(1-3):57-63, 2002. [doi]
@article{CropperG02, title = {Restricted list coloring and Hall s condition}, author = {Matthew M. Cropper and John L. Goldwasser}, year = {2002}, url = {http://dx.doi.org/}, researchr = {https://researchr.org/publication/CropperG02}, cites = {0}, citedby = {0}, journal = {Discrete Mathematics}, volume = {249}, number = {1-3}, pages = {57-63}, }