1. T. WATANABE, K. OGAWA, Chem. Abstr., 24 (1929) 1037.
2. S. B. SMITH, A. Y. HYNDSHAW, H. F. LAUGHLIN, S. C. MAYNARD, Mercury pollution control by activated carbon, A review of field experience. Paper presented at the 44th water Pollution Control Federation, San Francisco, 1971.
3. S. B. SMITH, Trace metals removal by avtivated carbon, Paper presented at the Conference on Traces of Heavy Metals in Water. Removal processes and monitoring, Princeton University, NJ, 1973.
4. T. MARUYAMA, S. A. HANNAH, J. R. COHEN, J. Wat. Pollut. Control. Fed., 47 (1975) 962.
5. S. A. HANNAH, M. JELUS, J. R. COHEN, J. Wat. Pollut. Control. Fed. 49 (1977) 2297.