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Uncapacitated single-allocation hub median location with edge upgrading: models and exact solution algorithms
TRANSPORTATION RESEARCH PART B-METHODOLOGICAL
Infrastructure access charges, service differentiation, and strategic competition in the EU railway passenger market.
Improve d polyhe dral descriptions and exact procedures for a broad class of uncapacitated p -hub median problems
RDF description of TRANSPORTATION RESEARCH PART B-METHODOLOGICAL - http://research.umh.es/vivo/pub/revista/0191-2615