@book{LauthHoelderichWagenblast1993,
  author    = {Lauth, Jakob and Hoelderich, Wolfgang and Wagenblast, Gerhard},
  title     = {Molecular sieves containing azo dyes ; Internationale [Pantent]anmeldung WO93/17965 ; Ver{\"o}ffentlichungsdatum: 16.09.1993 / Anmelder: BASF AG},
  publisher = {Weltorganisation f{\"u}r geistiges Eigentum, Internat. B{\"u}ro},
  address   = {[Genf]},
  pages     = {45 S.},
  year      = {1993},
  language  = {en}
}
@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}
}