@book{Dircksen2011,
  author    = {Dircksen, Michael},
  title     = {Theorie und Praxis von Logistik-Informationssystemen (LIS). Wilhelm B{\"u}chner Hochschule. Darmstadt (Studienhefte der Wilhelm B{\"u}cher Hochschule, KIS01)},
  year      = {2011},
  language  = {de}
}
@article{DircksenVallee2011,
  author    = {Dircksen, Michael and Vall{\´e}e, Franz},
  title     = {Extended logistical factors for success in international trade},
  series = {World Customs Journal},
  journal   = {World Customs Journal},
  pages     = {77 -- 94},
  year      = {2011},
  language  = {en}
}