1. Bubeck, R.C., Diement, W.H., Deck, B.L., Baldwin, A.L., and Lipton, D.S.: 1971, Science 172, 1128.
2. Campbell, P.G.C., Lewis, A.G., Chapman, P.M., Crowder, A.A., Fletcher, W.K., Imber, B., Luoma, S.N., Stokes, P.M., and Winfrey, M.: 1988, Biologically available metals in sediments. NRCC No. 27694 National Research Council Canada, Ottawa.
3. Chao, T.T., and Zhou, L.: 1983, tSoil Sci. Soc. Am. J. 47, 225.
4. DeGroot, A.J., DeGoey, J.J.M., and Zegers, C.: 1971, Geo. Mijbouw 50, 393.
5. Feick, G., Johanson, E.E., and Yeaple, D.S.: 1972a, Control of mercury contamination in freshwater sediments. U.S. EPA-R2-72-077. Washington, D.C.