@article{decicom-IJAS-2008,
  author = {Heikki Kokkinen and Mikko V. J. Heikkinen and Markus Miettinen},
  title = {Post-Payment Copyright System versus Online Music Shop: Business Model and Privacy},
  journal = {Int. J. on Advances in Security},
  volume = {2},
  number = {2},
  pages = {112-128},
  month = {},
  year = {2009},
  url = {http://www.iariajournals.org/security/sec_v2_n23_2009_paged.pdf},
  note = {},
}