1. Chemical Encyclopedy, Ed. by I. L. Knunyants (Sov. Entsiklopediya, Moscow, 1988), Vol. 1, p. 347 [in Russian].
2. G. G. Furin, Russ. Chem. Rev. 56, 532 (1987).
3. R. A. Cox, J. Am. Chem. Soc. 96, 1059 (1974).
4. Course of Physical Chemistry, Ed. by Ya. I. Gerasimov (Khimiya, Moscow, 1964), Vol. 1, p. 165 [in Russian].
5. Yu. A. Mikheev, L. N. Guseva, and Yu. A. Ershov, Russ. J. Phys. Chem. A 89, 224 (2015).