János Balogh József Békési Gábor Galambos Gerhard Reinelt Lower Bound for the Online Bin Packing Problem with Restricted Repacking. 398-410 2008 38 SIAM J. Comput. 1 http://dx.doi.org/10.1137/050647049 db/journals/siamcomp/siamcomp38.html#BaloghBGR08