Brittain, J.E. and Saltveit, S.J. 1988. A fish-kill in the river, Akerselva, Oslo, Norway: The use of benthos and fish to trace the source of pollution. Fauna norvegica. 9, (Dec. 1988), 37-42. DOI:https://doi.org/10.5324/fn.v9i0.6081.