@phdthesis{ Viappiani2007thesis,
  school = {Ecole Polytechnique Federale de Lausanne (EPFL)},
  title = {Preference-based search with suggestions},
  url = {http://library.epfl.ch/en/theses/?nr=3876},
  author = {Viappiani, Paolo},
  ee = {http://biblion.epfl.ch/EPFL/theses/2007/3876/EPFL_TH3876.pdf},
  year = {2007},
  type = {EPFL PhD. Thesis No. 3876},
  address = {Lausanne (Switzerland)}
}