Ola Svensson, Jakub Tarnawski, László A. Végh. Constant Factor Approximation for ATSP with Two Edge Weights - (Extended Abstract). In Quentin Louveaux, Martin Skutella, editors, Integer Programming and Combinatorial Optimization - 18th International Conference, IPCO 2016, Liège, Belgium, June 1-3, 2016, Proceedings. Volume 9682 of Lecture Notes in Computer Science, pages 226-237, Springer, 2016. [doi]
Abstract is missing.