@misc{LauthHoelderichHarthetal.1994,
  author    = {Lauth, Jakob and H{\"o}lderich, Wolfgang and Harth, Klaus and Hibst, Hartmut},
  title     = {Schalenkatalysatoren : Offenlegungsschrift: DE4221011A1 ; Ver{\"o}ffentlichungstag im Patentblatt: 05.01.1994 / Anmelder: BASF AG, 67063 Ludwigshafen},
  publisher = {Deutsches Patent- und Markenamt},
  address   = {M{\"u}nchen},
  pages     = {10 S.},
  year      = {1994},
  language  = {de}
}
@misc{LauthHoelderichHarthetal.1996,
  author    = {Lauth, Jakob and Hoelderich, Wolfgang and Harth, Klaus and Hibst, Hartmuth},
  title     = {Coated catalysts : United States Patent ; patent number 5,559,065 ; date of patent: Sep. 24, 1996 / assignee: BASF Aktiengesellschaft},
  publisher = {[United States Trademark and Patent Office]},
  address   = {[Alexandria, VA]},
  pages     = {7 S.},
  year      = {1996},
  language  = {en}
}