1. Frumkin, A. and Gorodetzkaja, A., Z. Phys. Chem., 1928, vol. 136, p. 451.
2. Frumkin, A.N., Potentsialy nulevogo zaryada (Zero Charge Potentials), Moscow: Nauka, 1979.
3. Trasatti, S., Electrochim. Acta, 1987, vol. 32, p. 843.
4. Trasatti, S., Electrochim. Acta, 1990, vol. 35, p. 269.
5. Trasatti, S., Electrochim. Acta, 1991, vol. 36, p. 1659.