Brittain, John E., and Svein Jakob Saltveit. “A Fish-Kill in the River, Akerselva, Oslo, Norway: The Use of Benthos and Fish to Trace the Source of Pollution”. Fauna norvegica 9 (December 31, 1988): 37-42. Accessed November 22, 2024. https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/6081.