@techreport{BunkeHamacherMaureretal.2003,
  author    = {Florentine Bunke and Horst W. Hamacher and Andreas Maurer and Stefanie M{\"u}ller},
  title     = {Bills of material and linear algebra},
  institution = {Fachbereich Mathematik},
  series    = {Report in Wirtschafts- und Technomathematik an Schulen (WiMS/TeMS Report)},
  number    = {2, englisch},
  year      = {2003},
  url  = {http://nbn-resolving.de/urn:nbn:de:hbz:386-kluedo-14282},
}