@book{StrassnerLukasLoes2010,
  author    = {Strassner, C and Lukas, M and L{\o}es, A-K},
  title     = {Certification of public organic procurement in Denmark, Finland, Italy and Norway as compared to Germany. ipopy discussion paper 5/2010},
  edition   = {Vol. 5 No. 103/2010},
  address   = {Norwegen},
  isbn      = {ISBN 978-82-17-006},
  pages     = {76 S},
  year      = {2010},
  language  = {en}
}
@book{SchoenbrodtSchinkowskiStrassneretal.2010,
  author    = {Sch{\"o}nbrodt, C and Schinkowski, N and Strassner, C and Hollmann, K and Ibing, S and Ross, A and Lukas, M},
  title     = {Einsatz von Hefeextrakt in Bio-Lebensmitteln. [Application of yeast extract in organic food]. Schlussbericht des Forschungsprojektes 08OE073 des Bundesprogramms {\"O}kologischer Landbau (B{\"O}L)},
  pages     = {44 S},
  year      = {2010},
  language  = {en}
}
@book{StrassnerNeuendorff2011,
  author    = {Strassner, C and Neuendorff, J.},
  title     = {Mit einfachen Schritten zur Bio-Zertifizierung. Der neue Leitfaden f{\"u}r Gemeinschaftsverpflegung und Gastronomie},
  editor    = {Roehl, R},
  edition   = {4. vollst{\"a}ndig {\"u}bera},
  address   = {M{\"u}nster},
  isbn      = {978-3-9813008-2-6},
  pages     = {28 S.},
  year      = {2011},
  language  = {de}
}
@book{StrassnerNeuendorff2011,
  author    = {Strassner, C and Neuendorff, J.},
  title     = {Easy Steps To Organic Certification. The updated manual for canteens, restaurants and foodservice operators.},
  editor    = {Roehl, R.},
  edition   = {2. vollst{\"a}ndig {\"u}bera},
  address   = {M{\"u}nster},
  isbn      = {978-3-9813008-1-9},
  pages     = {28 S.},
  year      = {2011},
  language  = {en}
}
@book{Strassner2012,
  author    = {Strassner, C},
  title     = {Inhalte und Umsetzung einer nachhaltigen Verpflegung.},
  volume    = {Band 1},
  editor    = {Roehl, R.},
  address   = {M{\"u}nster},
  pages     = {61 S.},
  year      = {2012},
  language  = {de}
}
@book{Strassner2012,
  author    = {Strassner, C},
  title     = {Sektoranalyse Außer-Haus-Markt Schwerpunkt Gemeinschaftsverpflegung.},
  volume    = {Band 2},
  editor    = {Roehl, R.},
  address   = {M{\"u}nster},
  pages     = {40 S.},
  year      = {2012},
  language  = {mul}
}
@book{FinkRoehlStrassneretal.2016,
  author    = {Fink, L and Roehl, R and Strassner, C and Antony, F and CO, Gensch},
  title     = {Leitfaden: Vermeidung von Lebensmittelabf{\"a}llen beim Catering},
  edition   = {1.},
  publisher = {Umweltbundesamt},
  pages     = {1 -- 36},
  year      = {2016},
  language  = {de}
}
@book{FuellesRoehlStrassneretal.2017,
  author    = {F{\"u}lles, M and Roehl, R and Strassner, C and Hermann, A and Teufel, J},
  title     = {MEHR BIO IN KOMMUNEN: Ein Praxisleitfaden des Netzwerks deutscher Biost{\"a}dte},
  editor    = {Netzwerk der deutschen BioSt{\"a}dte,},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  pages     = {72},
  year      = {2017},
  language  = {de}
}
@book{RoehlStrassnerNeuendorff2017,
  author    = {Roehl, R and Strassner, C and Neuendorff, J},
  title     = {Mit einfachen Schritten zur Bio-Zertifizierung. Der neue Leitfaden f{\"u}r Gemeinschaftsverpflegung und Gastronomie},
  publisher = {Eigenverlag},
  address   = {M{\"u}nster},
  isbn      = {978-3-9813008-2-6},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  pages     = {28},
  year      = {2017},
  language  = {de}
}