RT Journal Article T1 The Double Traveling Salesman Problem With Multiple Stacks: A Variable Neighborhood Search Approach A1 Felipe Ortega, Ángel A1 Ortuño Sánchez, María Teresa A1 Tirado Domínguez, Gregorio AB The double traveling salesman problem with multiple stacks (DTSPMS) is a vehicle routing problem that consists on finding the minimum total length tours in two separated networks, one for pickups and one for deliveries. A set of orders is given, each one consisting of a pickup location and a delivery location, and it is required to send an item from the former location to the latter one. Repacking is not allowed, but collected items can be packed in several rows in such a way that each row must obey the LIFO principle.In this paper, a variable neighborhood search approach using four new neighborhood structures is presented to solve the problem. PB Pergamon-Elsevier Science Ltd SN 0305-0548 YR 2009 FD 2009 LK https://hdl.handle.net/20.500.14352/49906 UL https://hdl.handle.net/20.500.14352/49906 LA eng NO Universidad Complutense de Madrid NO DGI NO Madrid Ciencia y Tecnología DS Docta Complutense RD 4 abr 2025