@inproceedings{Ritz2005,
  author    = {Thomas Ritz},
  title     = {Personalized information services : an electronic information commodity and its production},
  booktitle = {Electronic publishing '01 : 2001 in the digital publishing odyssey ; proceedings of an ICCC/IFIP conference held at the University of Kent at Canterbury, Kent, United Kingdom, 5 - 7 July, 2001 ; [proceedings of the Fifth Conference on Electronic Publishing]},
  pages     = {48 -- 58},
  year      = {2005},
}