Michael Werman Shmuel Peleg Robert Melter T. Yung Kong Bipartite Graph Matching for Points on a Line or a Circle. 277-284 1986 7 J. Algorithms 2 db/journals/jal/jal7.html#WermanPMK86 http://dx.doi.org/10.1016/0196-6774(86)90009-X