@misc{StuberKellerMenke2010,
  author    = {Stuber, Franz and Keller, Christel and Menke, Katharina},
  title     = {Bridging the gap between outdoor education and technical education. Reader zur Outdoor Education Conference, Fremantle},
  year      = {2010},
  language  = {en}
}
@misc{SchefoldStuber2010,
  author    = {Schefold, A. and Stuber, F.},
  title     = {Bridging the Gap between Outdoor Education and Technical Education, Freemantle},
  year      = {2010},
  language  = {en}
}