@book{WetterBruegging2004,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {Machbarkeitsstudie zur Bioethanolproduktion in landwirtschaftlichen Brennereien},
  edition   = {1. Aufl.},
  publisher = {Fachhochsch.},
  address   = {M{\"u}nster},
  isbn      = {3-938137-01-0},
  pages     = {57 S., [7] Bl. : graph. Darst.},
  year      = {2004},
  language  = {de}
}
@book{WetterBruegging2004,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {Machbarkeitsstudie zur Integration einer Strohheizungsanlage in eine landwirtschaftliche Brennerei},
  edition   = {1. Aufl.},
  publisher = {Fachhochsch.},
  address   = {M{\"u}nster},
  isbn      = {3-938137-02-9},
  pages     = {64 S., [20] Bl. : Ill., graph.},
  year      = {2004},
  language  = {de}
}