1. An improved approximation algorithm for maximum edge 2-coloring in simple graphs;Chen;Journal of Discrete Algorithms,2008
2. Approximating maximum edge coloring in multigraphs;Feige,2002
3. D. Hartvigsen, Extensions of matching theory, Ph.D. Thesis, Carnegie-Mellon University, 1984
4. Approximation Algorithms for NP-Hard Problems;Hochbaum,1997
5. Complexity of recognizing equal unions in families of sets;Jacobs;Journal of Algorithms,2000