1. M. HOWDEN, J. PILOT, in: Ion-Exchange Technology, D. NADEN, M. STREAT (Eds), Ellis-Horwood, 1984, p. 66.
2. E. D. COLLINS, D. O. CAMPBELL, L. J. KING, J. B. KNAUER, AIChE Symp. Series, Vol. 78, No. 213, 1982, p. 9.
3. S. G. FEGAN, B. M. LOWE, Proc. 6th Int. Zeolite Conf., D. OLSON, A. BISIO (Eds), Butterworths, 1984, p. 288.
4. L. H. BAETSLE, I. MARKYL-MUSYL, D. HUYS, in: Ion-Exchange in the Process Industries, Proc. Conf. Soc. Chem. Ind., London, 1970, p. 209.
5. J. BARRETT, J. A. W. DALZIEL, M. K. RAHMAN, Bull. Soc. Chim., France (1968) 1835.