1. J. A. Plambeck, in “Encyclopedia of the electrochemistry of the elements”, Vol. X, edited by Allen J. Bard (Marcel Dekker, New York, 1976).
2. J. Dubois and R. Buvet, Bull. Soc. Chim. Fr.
408 (1963) 2522.
3. M. D. Ingram and G. J. Janz, Electrochim. Acta
10 (1965) 783.
4. A. Conte and S. Casadio, Ricerca Scient.
36 (1966) 488.
5. A. Conte and M. D. Ingram, Electrochim. Acta
13 (1968) 1551.