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Naoki Katoh, Taihei Yano. An approximation algorithm for the pickup and delivery vehicle routing problem on trees. Discrete Applied Mathematics, 154(16):2335-2349, 2006. [doi]
Possibly Related PublicationsThe following publications are possibly variants of this publication: A New Approximation Algorithm for the Capacitated Vehicle Routing Problem on a TreeTetsuo Asano, Naoki Katoh, Kazuhiro Kawashima. isaac 1999: 317-326 [doi] A New Approximation Algorithm for the Capacitated Vehicle Routing Problem on a TreeTetsuo Asano, Naoki Katoh, Kazuhiro Kawashima. jco, 5(2):213-231, 2001.
The following publications are possibly variants of this publication: