1. G. J. Moody, J. D. R. Thomas, Chromatographic Separation and Extraction with Foamed Plastics and Rubbers, Marcel Dekker, New York and Basel, 1982.
2. T. Braun, J. D. Navratil, A. B. Farag, Polyurethane Foam Sorbents in Separation Chemistry. CRC Press Inc., Boca Raton, 1985.
3. A. B. Farag, M. E. Attia, H. N. A. Hassan,I. J. Chem. /B/, 20 /1981/ 693.
4. Š. Palágyi,Int. J. Applied Radiation Isotopes, 34 /1983/ 755.
5. Š. Palágyi,Isotopenpraxis, 21 /1985/ 130.