1. ANONYMUS, 1988. Ecological rehabilitation of the river Rhine: a proposal for a Netherlands research programme. RIVM-report 718810001. DBW/RIZA-report nr. 88.009.
2. BLAISE, C., R. VANCOILLIE, N. BERMINGHAM, and G. COULOMBRE, 1987. Comparison of the toxic response of three bioindicators (bacteria, algae and fish) to pulp and paper industry effluent. Internationale des Sciences de l'eau. 3:9–17.
3. BULICH, A.A., 1979. Use of luminescent bacteria for determining toxicity in aquatic environments. In: ASTM 667, Aquatic Toxicology, L.L. Markings and R.A. Kimerle (eds.), American Society for Testing of Materials, Philadelphia, USA, pp. 98–106.
4. CANTON, J.H., A. BUIJZE, R.P. VAN DEN DIKKENBERG, J.L.M. DE BER, and R.C.C. WEGMAN, 1987. Onderzoek naar de mogelijke effecten van de in het IMP gestelde Basiskwaliteit op een tweetal zoetwaterorganismen. RIVM rapport 718622001, National Institute of Public Health and Environmental Protection, Bilthoven, The Netherlands, pp. 15.
5. CAPEL, P.D., W. GIGER, P. REICHERT, and O. WANNER, 1988. Accdental input of pesticides into the River Rhine. Environ. Sci. Technol., Vol. 22, No. 9, 992–997.