Pankaj K. Agarwal, R. Sharathkumar. Approximation algorithms for bipartite matching with metric and geometric costs. In David B. Shmoys, editor, Symposium on Theory of Computing, STOC 2014, New York, NY, USA, May 31 - June 03, 2014. pages 555-564, ACM, 2014. [doi]
Abstract is missing.