References
- Goltermann , H. L. 1985 . Ann. Limnol. , 21 : 191 – 201 .
- Admiraal , W. and van Zanten , B. 1988 . Freshwat. Biol. , 20 : 215 – 225 .
- A.P.H.A. 1985 . Standard methods for the examination of water and wastewater , 16th ed. Washincton D.C.
- Babalonas , D. and Papastergiadou , E. 1989 . Hydrobiol , 116 : 487 – 498 .
- Kollman , A. L. and Wali , M. K. 1976 . Arch. Hydrobiol. , 4 : 439 – 472 .
- Capblancq , J. 1989 . Aquatic ecotoxicology: Fundamental concepts and methodologies , Vol. I , 21 – 34 . Boca Raton, Florida : C.R.C. press, Inc. .
- Admiraal , W. , Jacobs , D. M. L. H. A. , Breugem , P. and de Reuter van Stevenick , E. D. 1992 . Hydrobiologia , 235/236 : 479 – 489 .
- Wetzel , R. 1983 . Limnology , U.S.A. : CBS College Publishing .
- Meybeck , M. , Gauwet , G. , Dessery , S. , Somville , M. , Gouleau , D. and Billen , G. 1988 . Estu‐ arine . Coastal and Shelf Science , 27 : 595 – 624 .
- Billen , G. 1990 . Water pollution research reports (Commission of the European Communities) . : 153 – 172 .
- Chesterikoff , A. , Garban , B. , Billen , G. and Poulin , M. 1992 . Biogeochemistry , 17 : 147 – 164 .
- Mortimer , C. H. 1971 . Limnol. Oceanogr. , 16 : 387 – 404 .
- Weiler , R. R. 1973 . Limnol. Oceanogr. , 18 : 918 – 931 .
- Maene , L. M. November 1992 . IFA and the environment, British Sulphur 7nd European Fertilizer Forum November , 22 – 24 . Ghent