@article{2005-VanGils-Transformations,
  author        = {Gils, B. van and Proper, H.A. (Erik) and Bommel, P. van and van der Weide, Th.P.},
  title         = {Typing and transformational effects in complex information supply},
  journal       = {International Journal of Cooperative Information Systems},
  number        = {2},
  volume        = {16},
  month         = {June},
  year          = {2007},
  pages         = {229--270}
}