1. M. R. Hayns, Int. J. Quant. Chem.,21, 217 (1982).
2. J. L. Calais, Int. J. Quant. Chem.,21, 231 (1982).
3. Yu. I. Archakov and A. V. Shreider, The Effects of Hydrogen on Petroleum and Chemical Plant [in Russian], Mashinostroenie, Moscow (1976).
4. H. Libowicz and M. Whittenham (eds.), Materials Science and Power-Engineering Problems [Russian translation], Mir, Moscow (1982).
5. Z. D. Popovic, M. J. Stott, P. Carbotte, and G. P. Piercy, Phys. Rev. B,13, 590 (1976).