@article{LukasLoesNoeltingetal.2012,
  author    = {Lukas, M and L{\o}es, A-K and N{\"o}lting, B and Strassner, C},
  title     = {School meals. How to increase organic food consumption in schools.},
  series = {Ecology \& Farming},
  journal   = {Ecology \& Farming},
  number    = {Nr. 2},
  pages     = {24 -- 26},
  year      = {2012},
  language  = {mul}
}
@article{LukasStrassnerLoes2011,
  author    = {Lukas, M and Strassner, C and L{\o}es, A-K},
  title     = {A need for harmonization across Europe? Certification of organic catering.},
  series = {Ecology \& Farming},
  journal   = {Ecology \& Farming},
  number    = {Nr. 5},
  pages     = {29 -- 31},
  year      = {2011},
  language  = {en}
}
@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}
}