@techreport{KallrathMuellerNickel2002,
  author    = {J. Kallrath and M.C. M{\"u}ller and S. Nickel},
  title     = {Batch Presorting Problems:Models and Complexity Results},
  institution = {Fraunhofer (ITWM)},
  series    = {Berichte des Fraunhofer-Instituts f{\"u}r Techno- und Wirtschaftsmathematik (ITWM Report)},
  number    = {40},
  year      = {2002},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-13056},
}