@book{Grotendorst2003,
  author    = {Grotendorst, Johannes},
  title     = {ComputerMathematik mit Maple},
  publisher = {Forschungszentrum J{\"u}lich},
  address   = {J{\"u}lich},
  isbn      = {3-89336-325-4},
  pages     = {VI, 274 S. : Ill., graph. Darst.},
  year      = {2003},
  language  = {de}
}
@book{Grotendorst2003,
  author    = {Grotendorst, Johannes},
  title     = {ComputerMathematik mit Maple / 2. Aufl.},
  publisher = {Forschungszentrum J{\"u}lich},
  address   = {J{\"u}lich},
  isbn      = {3-89336-354-8},
  pages     = {VI, 293 S. : graph. Darst. + 1 CD-ROM},
  year      = {2003},
  language  = {de}
}