@book{Lassmann.2006,
  address = {Wiesbaden},
  author = {Lassmann, Wolfgang and Schwarzer, Jens and Ehrenberg, Dieter},
  edition = {1. Aufl..},
  interhash = {2ef20f207d01a73d3223bd397af2ea5f},
  intrahash = {58e3dd8b0c5e4462efc5a79c160f8eba},
  isbn = {3-409-12725-9},
  publisher = {Gabler},
  title = {Wirtschaftsinformatik:  Nachschlagewerk für Studium und Praxis},
  year = 2006
}

@book{Mertens.2009,
  address = {Wiesbaden},
  author = {Mertens, Peter and Meier, Marco and Meier, Marco C.},
  edition = {10., vollst. überarb. Aufl..},
  interhash = {4df48d827b045031cfacaa443ee59dae},
  intrahash = {61870cf18d8d7df4b0d1131b038b1757},
  isbn = {978-3-8349-1001-1},
  price = {ca. EUR 29.90},
  publisher = {Gabler},
  series = {Lehrbuch},
  title = {Planungs- und Kontrollsysteme in der Industrie},
  url = {http://deposit.d-nb.de/cgi-bin/dokserv?id=3141613&prov=M&dok_var=1&dok_ext=htm / http://www.gbv.de/dms/zbw/573768455.pdf},
  volume = 2,
  year = {2009 /// 2009 ershienen 2008}
}

@book{Back.2008,
  address = {München},
  author = {Back, Andrea},
  interhash = {fad6e7a40d4c53d1aba66f7d35389137},
  intrahash = {181a453213b4702e1ec218541148b5c8},
  isbn = {978-3-486-58579-7},
  publisher = {Oldenbourg},
  title = {Web 2.0 in der Unternehmenspraxis:  Grundlagen Fallstudien und Trends zum Einsatz von Social-Software},
  year = 2008
}