1. 2) U. RUML. : Metalloberfläche, 23 (1969), p. 35
2. 3) W. METZGER and R. OTT : ibid., 31 (1977), p. 404
3. 4) H. HÜBNER and A. OSTERMANN : Galvanotechnik, 67 (1976), p. 452
4. 6) S. ISHIMORI, S. OTSUKA and M. TAKAMA : Proc. 71st AES Annual Technical Conference (1984), O-5
5. 7) W. METZGER, H.-H. TOMBRINK and Th. FLORIAN : Metalloberfläche, 32 (1978), p. 180