Michel X. Goemans, David P. Williamson. Primal-Dual Approximation Algorithms for Feedback Problems. In William H. Cunningham, S. Thomas McCormick, Maurice Queyranne, editors, Integer Programming and Combinatorial Optimization, 5th International IPCO Conference, Vancouver, British Columbia, Canada, June 3-5, 1996, Proceedings. Volume 1084 of Lecture Notes in Computer Science, pages 147-161, Springer, 1996.
Abstract is missing.