Validation of a Swimming Direction Model for the Downstream Migration of Atlantic Salmon Smolts oleh Marcell Szabo-Meszaros, Ana T. Silva, Kim M. Bærum, Henrik Baktoft, Knut Alfredsen, Richard D. Hedger, Finn Økland, Karl Ø. Gjelland, Hans-Petter Fjeldstad, Olle Calles, Torbjørn Forseth