@incollection{itb1753,
  author = {Gessler, Michael and Holm, Claus},
  editor = {G. Rackelmann},
  title = {Blended Learning. Neue Formen der Kompetenzentwicklung im Projektmanagement},
  year = {2004},
  booktitle = {Best Practice im Projektmanagement},
  pages = {431–444},
  publisher = {GPM Deutsche Gesellschaft für Projektmanagement},
}