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"Primal-Dual Approximation Algorithms for Feedback Problems in Planar Graphs."
Michel X. Goemans, David P. Williamson (1998)
- Michel X. Goemans, David P. Williamson:
Primal-Dual Approximation Algorithms for Feedback Problems in Planar Graphs. Comb. 18(1): 37-59 (1998)

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