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"2-Medians in trees with pos/neg weights."
Rainer E. Burkard, Eranda Çela, Helidon Dollani (2000)
- Rainer E. Burkard, Eranda Çela, Helidon Dollani:
2-Medians in trees with pos/neg weights. Discret. Appl. Math. 105(1-3): 51-71 (2000)
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