@misc{Schmickler2018,
  author    = {Schmickler, F.-P.},
  title     = {Hygiene in Trinkwasser-Installationen Gef{\"a}hrdungsanalyse VDI/BTGA/ ZVSHK 6023 Blatt 2},
  year      = {2018},
  language  = {mul}
}
@misc{Baecker2018,
  author    = {B{\"a}cker, Carsten},
  title     = {VDI/BTGA/ZVSHK 6023 Blatt 2 Hygiene in Trinkwasser-Installationen - Gef{\"a}hrdungsanalyse},
  year      = {2018},
  language  = {mul}
}
@misc{WetterBruegging2018,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {Biogas Benchmark M{\"u}nster; Biogaskongress 2018, Linz, Dezember 2018},
  year      = {2018},
  language  = {mul}
}
@misc{WetterBruegging2018,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {2 x Posterausstellung: EBA Biogaskonferenz, Antwerpen, Januar 2018},
  year      = {2018},
  language  = {mul}
}
@misc{WetterBruegging2018,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {Posterpr{\"a}sentation REzAB ; Biogaskongress 2018, Linz, Dezember 2018},
  year      = {2018},
  language  = {mul}
}