Thomas A. Roemer, Reza Ahmadi, Sriram Dasu. The Traveling Salesman Problem with flexible coloring. Discrete Applied Mathematics, 160(12):1798-1814, 2012. [doi]
@article{RoemerAD12, title = {The Traveling Salesman Problem with flexible coloring}, author = {Thomas A. Roemer and Reza Ahmadi and Sriram Dasu}, year = {2012}, doi = {10.1016/j.dam.2012.03.004}, url = {http://dx.doi.org/10.1016/j.dam.2012.03.004}, researchr = {https://researchr.org/publication/RoemerAD12}, cites = {0}, citedby = {0}, journal = {Discrete Applied Mathematics}, volume = {160}, number = {12}, pages = {1798-1814}, }