1. J. C. Biermann, M. J. Wetterwald, J. Messiet and J. Lahaye,Electrochim. Acta 26 (1981) 1237.
2. H. P. Boehm, E. Diehl and W. Heck,Rev. Gen. Caout. 41 (1974) 461.
3. J. Caudle, K. G. Summer and F. L. Tye, 3rd Conference on Industrial Carbons and Graphite (Soc. Chem. Ind., 1970) p. 168.
4. J. Caudle, C. A. Betts and F. L. Tye,Power Sources 2 (1978) 319.
5. A. Sattar Syed and M. Anwar Hossain,Power Sources 6 (1976) 436.