@techreport{itb3159,
  author = {Hornecker, E. and Robben, B.},
  title = {Lernen und Begreifen – Pneumatikunterricht in einer Real Reality-Umgebung},
  year = {1998},
  series = {artec-papers},
  number = {62 – in der SuUB erhältlich / available at SuUB},
  publisher = {Universität Bremen},
  address = {Bremen},
  language = {de},
}