MohammadHossein Bateni, Julia Chuzhoy. Approximation Algorithms for the Directed k-Tour and k-Stroll Problems. In Maria J. Serna, Ronen Shaltiel, Klaus Jansen, José D. P. Rolim, editors, Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques, 13th International Workshop, APPROX 2010, and 14th International Workshop, RANDOM 2010, Barcelona, Spain, September 1-3, 2010. Proceedings. Volume 6302 of Lecture Notes in Computer Science, pages 25-38, Springer, 2010. [doi]
Abstract is missing.