1. Andrew, R. W.: 1976, ?Toxicity Relationships to Copper Forms in Natural Waters?, in R. W. Andrew, P. V. Hodson, and D. E. Konasewich (eds.),Workshop on Toxicity to Biota of Metal Forms in Natural Water, proceedings of a workshop held in Duluth, Minnesota, Oct. 7?8, 1975. International Joint Commission, pp. 127?143.
2. Abo-Rady, M.: 1979,Z. Lebensm. Unters. Forsch. 168, 259.
3. Beamish, R. J. and Harvey, H. H.: 1972,J. Fish. Res., Board Can. 29, 1131.
4. Beamish, R. J.: 1974a,Water Res. 8, 85.
5. Beamish, R. J.: 1974b,J. Fish. Res. Board Can. 31, 49.