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2013
Demange, M., T. Ekim, and , "A note on the NP-hardness of two matching problems in induced subgrids", Discrete Mathematics and Theoretical Computer Science, vol. 15, no. 2, pp. 233–242, 2013.
2010
Ekim, T., B. Ries, D. de Werra, and , "Split-critical and uniquely split-colorable graphs", Discrete Mathematics and Theoretical Computer Science, vol. 12, no. 5, pp. 1–24, 2010.
2006
Demange, M., T. Ekim, D. de Werra, and , "On the approximation of Min Split-coloring and Min Cocoloring.", J. Graph Algorithms Appl., vol. 10, no. 2, pp. 297–315, 2006.