Ronald Koch Martin Skutella Ines Spenke Maximum <i>k</i> -Splittable <i>s</i> , <i>t</i> -Flows. 56-66 2008 43 Theory Comput. Syst. 1 http://dx.doi.org/10.1007/s00224-007-9068-8 db/journals/mst/mst43.html#KochSS08