Oug, E., M. E. Christiansen, K. Dobbe, A.-H. Rønning, T. Bakken, and J. A. Kongsrud. “Mapping of Marine Benthic Invertebrates in the Oslofjord and the Skagerrak: Sampling Data of Museum Collections from 1950-1955 and from Recent Investigations”. Fauna Norvegica, vol. 35, Dec. 2015, pp. 35-45, doi:10.5324/fn.v35i0.1944.