Atsuhiro Nakamoto, Seiya Negami, Katsuhiro Ota. Chromatic Numbers and Cycle Parities of Quadrangulations on Nonorientable Closed Surfaces. Electronic Notes in Discrete Mathematics, 11:509-518, 2002. [doi]
@article{NakamotoNO02, title = {Chromatic Numbers and Cycle Parities of Quadrangulations on Nonorientable Closed Surfaces}, author = {Atsuhiro Nakamoto and Seiya Negami and Katsuhiro Ota}, year = {2002}, doi = {10.1016/S1571-0653(04)00096-4}, url = {http://dx.doi.org/10.1016/S1571-0653(04)00096-4}, researchr = {https://researchr.org/publication/NakamotoNO02}, cites = {0}, citedby = {0}, journal = {Electronic Notes in Discrete Mathematics}, volume = {11}, pages = {509-518}, }