@article{2005-VanGils-Market,
  author        = {Gils, Bas van and Proper, H.A. and Bommel, P. van and Weide, Th.P. van der},
  title         = {Value and the Information Market},
  journal       = {Data \& Knowledge Engineering},
  volume        = {61},
  number        = {1},
  month         = {April},
  year          = {2007},
  pages         = {153-175}
}