Fabián A. Chudak, David P. Williamson. Improved Approximation Algorithms for Capacitated Facility Location Problems. In Gérard Cornuéjols, Rainer E. Burkard, Gerhard J. Woeginger, editors, Integer Programming and Combinatorial Optimization, 7th International IPCO Conference, Graz, Austria, June 9-11, 1999, Proceedings. Volume 1610 of Lecture Notes in Computer Science, pages 99-113, Springer, 1999. [doi]
Abstract is missing.