David Mitchell. Guarded Constraint Models Define Treewidth Preserving Reductions. In Thomas Schiex, Simon de Givry, editors, Principles and Practice of Constraint Programming - 25th International Conference, CP 2019, Stamford, CT, USA, September 30 - October 4, 2019, Proceedings. Volume 11802 of Lecture Notes in Computer Science, pages 350-365, Springer, 2019. [doi]
Abstract is missing.