@CONFERENCE{Seabra2007:recpad,
  author =       {José Seabra and João Sanches},
  title =        {Engineering a 3D Ultrasound Robotic System},
  booktitle =    {13a Conferência Portuguesa de Reconhecimento de Padrões},
  year =         {2007},
  editor =       {},
  volume =       {},
  series =       {},
  pages  =       {},
  address =      {},
  month =        {Oct},
  organization = {},
  publisher =    {},
  note =         {Lisboa},
  key =          {},
  crossref =     {},
  annote =       {},
}