1. W. R. Charles and R. N. Mesial, US Pat. 3.254.952,Chem. Abstrs., 1966,65, 5072h.
2. E. Schmitz, V. Bicker, and Shramm,J. Pract. Chem., 1978,320 (3), 413.
3. B. V. Lyalin and V. A. Petrosyan,Elektrokhimiya, 1995,10, 1146 [Russ. J. Electrochem., 1995,10 (Engl. Transl.)].
4. H. Delalu and R. Cohen-Aded,J. Chem. Phys. Phys.-Chim. biol., 1979,76, 465.
5. E. Standt, US Pat.2.118.503,Chem. Abstrs., 1938,32, 5313.