@misc{LauthHoelderichWagenblastetal.1993,
  author    = {Lauth, Jakob and H{\"o}lderich, Wolfgang and Wagenblast, Gerhard and Schefczik, Ernst},
  title     = {Molekularsiebe, enthaltend Farbstoffe auf Basis von Indigo : Offenlegungsschrift DE4207339A1 ; Ver{\"o}ffentlichungstag im Patentblatt: 16.09.1993 / Anmelder: BASF AG, 67063 Ludwigshafen},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {10 S. : Ill.},
  year      = {1993},
  language  = {de}
}
@misc{LauthHoelderichWagenblastetal.1993,
  author    = {Lauth, Jakob and H{\"o}lderich, Wolfgang and Wagenblast, Gerhard and Albert, Bernhard [u.a.]},
  title     = {Azofarbstoffe enthaltende Molekularsiebe : Offenlegungsschrift DE4207745A1 ; Ver{\"o}ffentlichungstag im Patentblatt: 16.09.1993 / Anmelder: BASF AG, 67063 Ludwigshafen},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {22 S. : Ill.},
  year      = {1993},
  language  = {de}
}
@misc{LauthHoelderichWagenblast1996,
  author    = {Lauth, Jakob and Hoelderich, Wolfgang and Wagenblast, Gerhard},
  title     = {Molecular sieves containing azo dyes : United States Patent ; patent number 5,573,585 ; date of patent: Nov. 12, 1996 / assignee: Wolfgang Hoelderich. Inventors: Guenter Lauth ; Wolfgang Hoelderich ; Gerhard Wagenblast ...},
  publisher = {[United States Trademark and Patent Office]},
  address   = {[Alexandria, VA]},
  pages     = {15 S. : graph. Darst.},
  year      = {1996},
  language  = {en}
}