T. S. Aas, H. J. Sixten, M. Hillestad, T. Ytrestøyl, H. Sveier, and T. Åsgård, “Feed intake, nutrient digestibility and nutrient retention in Atlantic salmon (Salmo salar L.) fed diets with different physical pellet quality”, J Fish, vol. 8, no. 2, pp. 768-776, Aug. 2020.