Goldberg, A. V.Tardos, E.Tarjan, R.2007-11-092007-11-091989-09860https://hdl.handle.net/1813/8744This paper published in "SIAM Journal on Optimization" 2 (1992) 349-3598561316 bytesapplication/pdfen-USOperations ResearchIndustrial Engineeringtechnical reporttechnical report