@article{354776,
      author = {Ritrovato, Pierluigi.},
      url = {http://library.usi.edu/record/354776},
      title = {Towards the learning grid advances in human learning  services / [electronic resource] :},
      publisher = {IOS Press,},
      recid = {354776},
      pages = {x, 239 p. :},
      address = {Washington, DC :},
      year = {2005},
}