Hassel A., Skjoldal H. R., Gjøsæter H., Loeng H., and Omli L. “Impact of Grazing from Capelin (Mallotus Villosus) on Zooplankton: A Case Study in the Northern Barents Sea in August 1985”. Polar Research, vol. 10, no. 2, Jan. 1991, pp. 371-88, doi:10.3402/polar.v10i2.6753.