@incollection{Stein1994,
  author    = {Stein, Roland},
  title     = {Lernen},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-40202},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1994},
  abstract  = {No abstract available},
  subject      = {Sonderp{\"a}dagogik / W{\"o}rterbuch},
  language  = {de}
}
@incollection{Stein1994,
  author    = {Stein, Roland},
  title     = {MCD},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-40210},
  publisher      = {Universit{\"a}t W{\"u}rzburg},
  year      = {1994},
  abstract  = {No abstract available},
  subject      = {Sonderp{\"a}dagogik / W{\"o}rterbuch},
  language  = {de}
}