Can the precision of bottom trawl indices be increased by using simultaneously collected acoustic data? The Barents Sea experience

Vidar Hjellvik, Dag Tjøstheim, Olav Rune Godø
2007 Canadian Journal of Fisheries and Aquatic Sciences  
doi:10.1139/f07-101 fatcat:l5rub45ktfbsjkixjrsmmoa4iu