Hanssen, Leif and Øyan, Mats Jørgen and Plettemeier, Dirk and Brovoll, Sverre and Eide, Jo and Dypvik, Henning > Ekkokardiografi or TermsetEmneord::Radar or TermsetEmneord::Frekvensmodulering or RIMFAX or Radar or Romfart > Article