1. Technetium-99 and cesium-134 as long distance tracers in Arctic waters;Aarkrog;Estuarine, Coastal and Shelf Science,1987
2. British Nuclear Fuels plc (1991–1998). Annual reports on radioactive discharges and monitoring of the environment. Risley, UK: British Nuclear Fuels Limited.
3. Levels of 99Tc in biota and seawater samples from Norwegian coastal waters and adjacent seas;Brown;Marine Pollution Bulletin,1999
4. Technetium-99 concentration factors in Cumbrian seafood;Busby;Radioprotection-Colloques,1997
5. Coughtrey, P.J., & Thorne, M.C. (1983). Radionuclide distribution and transport in terrestraial and aquatic ecosystems, vol. 3 (pp. 210–228). Rotterdam: A.A. Balkema.