1. B. Gross, ?Charge storage in solid dielectrics? (Elsevier, Amsterdam, 1964).
2. M. M. Perlman, J. Electrochem. Soc. 119 (1972) 892.
3. J. Van Turnhout, ?Thermally stimulated discharge of polymer electrets? (Elsevier, Amsterdam, 1975).
4. H. J. Wintle, J. Acoust. Soc. Amer. 53 (1973) 1578.
5. P. Hedvig and A. Somogyi, ?Proceedings of the 3rd Tihany symposium on Radiation chemistry?, Edited by J. Dobo and P. Hedvig (Akadémiai Kiadó, Budapest, 1972) p. 907.