The October 2019 issue of Networks addresses both theoretical and algorithmic advances for several network optimization problems. The specific problems studied are:
• vehicle routing with simultaneous pickup and delivery
• bilevel minimum spanning trees
• time-dependent shortest path problems with discounted waiting
• minimum reload cost cycle covers
• qualitative analysis of monotonicity in minimum cost network flows
We trust that the readership of INFORMS will find these contributions to be of some interest.
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Doug Shier and Bruce Golden
Editors-in-Chief, Networks
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