1. B. Baranowski, Z. Szklarska-Smialowska, and M. Smialowski, Bull. Acad. Pol. Sci., 6: 179 (1958).
2. B. Baranowski, Bull. Acad. Pol. Sci., 7: 907 (1959).
3. B. Baranowski, Bull. Acad. Pol. Sci., 7: 891 (1959).
4. A. Janko, Bull. Acad. Pol. Sci., 8: 131 (1960).
5. Electrochemical formation and disintegration of the NiH phase in bright nickel coatings