Viet Hung Nguyen. A 2log2(n)-Approximation Algorithm for Directed Tour Cover. In Ding-Zhu Du, Xiaodong Hu, Panos M. Pardalos, editors, Combinatorial Optimization and Applications, Third International Conference, COCOA 2009, Huangshan, China, June 10-12, 2009. Proceedings. Volume 5573 of Lecture Notes in Computer Science, pages 208-218, Springer, 2009. [doi]
Abstract is missing.