River bed construction impact and habitat restoration for juvenile atlantic salmon salmo salar l. and brown trout salmo trutta l Hvidsten, N.A.; Johnsen, B.O. Aquaculture and Fisheries Management 23(4): 489-498 1992 10.1111/j.1365-2109.1992.tb00792.x https://eurekamag.com/research/007/760/007760793.php