Wil Michiels Jan H. M. Korst Emile H. L. Aarts Jan van Leeuwen Performance ratios of the Karmarkar-Karp differencing method. 19-32 2007 13 J. Comb. Optim. 1 http://dx.doi.org/10.1007/s10878-006-9010-z db/journals/jco/jco13.html#MichielsKAL07