@book{OPUS4-931,
  title     = {E-Learning in Europe - Learning Europe},
  editor    = {Ullrich Dittler and Helge Kahler and Michael Kindt and Christine Schwarz},
  publisher = {Waxmann},
  address   = {M{\"u}nster},
  pages     = {327},
  year      = {2005},
  language  = {en}
}