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"Approximating Steiner trees in graphs with restricted weights."
Magnús M. Halldórsson et al. (1998)
- Magnús M. Halldórsson, Shuichi Ueno, Hiroshi Nakao, Yoji Kajitani:
Approximating Steiner trees in graphs with restricted weights. Networks 31(4): 283-292 (1998)
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