@techreport{GelarehNickel2007,
  author    = {S. Gelareh and S. Nickel},
  title     = {New approaches to hub location problems in public transport planning},
  institution = {Fraunhofer (ITWM)},
  series    = {Berichte des Fraunhofer-Instituts f{\"u}r Techno- und Wirtschaftsmathematik (ITWM Report)},
  number    = {133},
  year      = {2007},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-15556},
}