@InCollection{Krysztoforski:2011,
  author  = "K. Krysztoforski and R. Będziński and E. Świątek-Najwer and P. Krowicki",
  title     = "Calibration of free hand ultrasound probe tracked by optical system",
  pages     = "63--68",
  year      = "2011",
  booktitle = "Technology and medical sciences, TMSi 2010",
  editor    = "eds. R. M. Natal Jorge [i. in.]",
  publisher = "CRC Press",
  address   = "Boca Raton",
}