1. Adriano, D. C., Page, A. L., Elseewi, A. A., Chang, A. C. and Straughn, I.: 1980,J. Environ. Qual. 7, 333.
2. Chang, A. C., Lund, L. J., Page, A. L. and Warneke, J. E.: 1977,J. Environ. Qual. 6, 270.
3. Erickson, A. E., Jacobs, L. W., Sierzega, P. E.: 1987, 26:1-11. Proceedings of Eighth International Ash Ulilization Symposium, American Coal Ash Association, Washington, D. C.
4. Furr, A. K., Kelly, W. C., Bache, C. A., Gutenmann, W. H. and Lisk, D. J.: 1977,Environ. Sci. Technol 11, 1104?112.
5. Jacobs, L. W., Erickson, A. E., Berti, W. R. and MacKellar, B. M.: 1991, 59:1-16. Proceedings of the Ninth International Ash Utilization Symposium, American Coal Ash Association, Washington, D. C.