1. Zur kenntnis der nickelhydroxidelektrode—I.Über das nickel (II)-hydroxidhydrat
2. Rundlöf, H., Personal Communication, NFL, Studsvik, Sweden.
3. Vogel, A.I., A Textbook of Quantitative Inorganic Analysis, 3rd Edition, Longman, New York, 1961.
4. EXAFS study of the nickel oxide electrode
5. Eriksson, L., Personal Communication, Computer Program PUDER, Stockholm University, Stockholm, 2001.