@book{.2005,
  address = {Wiesbaden},
  author = {?},
  edition = {1. Aufl.},
  interhash = {e4c4e7d7046d390e21fe601f6388b6fd},
  intrahash = {c6141a77ccaaee2a8cc538fdd02204f2},
  isbn = {3835000810},
  price = {ca. EUR 45.90},
  publisher = {Dt. Univ.-Verl.},
  series = {Wirtschaftsinformatik},
  title = {Perspektiven des Mobile Business:  Wissenschaft und Praxis im Dialog},
  url = {http://www.gbv.de/dms/bs/toc/494329955.pdf},
  year = 2005
}

@book{Meier.2001,
  address = {Heidelberg},
  author = {Meier, Andreas},
  interhash = {32612b35969b222c2da525732a92d626},
  intrahash = {86aa177a6bde3a167be3804b86af44d5},
  isbn = {389864104X},
  publisher = {dpunkt-Verlag},
  series = {HMD - Praxis der Wirtschaftsinformatik},
  title = {Mobile Commerce},
  volume = {H. 220},
  year = 2001
}