@book{HesselerG{\"o}rtz2009,
  author    = {Hesseler, Martin and G{\"o}rtz, Marcus},
  title     = {ERP-Systeme im Einsatz},
  publisher = {W3L-Verlag},
  address   = {Herdecke},
  isbn      = {978-3-86834-006-8},
  pages     = {VII, 287},
  year      = {2009},
  language  = {de}
}