@book{GartzenHeilMang1992,
  author    = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas},
  title     = {Verfahren und Vorrichtung zur Isolierung von polymeren Werkstoffen und Metallen aus Verbundwerkstoffen / Offenlegungsschrift DE 4037523 A1 ; Offenlegungstag 27.05.1992},
  publisher = {Deutsches Patentamt},
  address   = {M{\"u}nchen},
  pages     = {4 S.},
  year      = {1992},
  language  = {de}
}
@book{MangHeilGartzen1992,
  author    = {Mang, Thomas and Heil, G{\"u}nter and Gartzen, Johannes},
  title     = {Verfahren zur Behandlung von Fotopapier / Patentschrift DE 4105368 C1},
  publisher = {Deutsches Patentamt},
  address   = {M{\"u}nchen},
  pages     = {4 S.},
  year      = {1992},
  language  = {de}
}
@book{GartzenHeilMang1993,
  author    = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas},
  title     = {Verfahren zum Behandeln von miteinander mittels Haftvermittler verbundene Materialien / Offenlegungsschrift DE 4127705 A1 ; Offenlegungstag 25.02.1993 / Anmelder: Schering AG},
  publisher = {Deutsches Patentamt},
  address   = {M{\"u}nchen},
  pages     = {4 S.},
  year      = {1993},
  language  = {de}
}
@book{GartzenHeilMang1998,
  author    = {Gartzen, Johannes and Heil, G{\"u}nter and Mang, Thomas},
  title     = {Verfahren zur Aufbereitung eines Gemisches aus Zellulose und granuliertem Polymer / Patentschrift DE 4133699 C2},
  publisher = {Deutsches Patentamt},
  address   = {M{\"u}nchen},
  pages     = {4 S.},
  year      = {1998},
  language  = {de}
}
@article{SchaeferHeil2002,
  author    = {Sch{\"a}fer, Horst and Heil, G{\"u}nter},
  title     = {Modeling and Graphic Presentation of Acid-Base Titration Curves. Presentation of an Alternative Method},
  series = {The Chemical Educator. 7 (2002), H. 6},
  journal   = {The Chemical Educator. 7 (2002), H. 6},
  isbn      = {1430-4171},
  pages     = {339 -- 346},
  year      = {2002},
  language  = {en}
}