@book{itb1806,
  editor = {Gessler, Michael and Holle, Larissa},
  title = {Crossing Boundaries in Vocational Education and Training: Innovative Concepts for the 21st Century},
  year = {2015},
  publisher = {Universität Bremen},
  doi = {10.13140/RG.2.1.2120.3928},
}