1. D. HENNINGS, in Proceedings of the 2nd International Conference on Passive Components: Materials, Technologies, Processing, Paris, (1987) pp. 165–70.
2. K. S. MAZDIYASNI,Ceram. Bull. 63 (1984) 591.
3. M. KLEE and W. BRAND,Klei/Glas/Keramiek 4 (1987) 60.
4. MATUSHITA, European Patent Publication number 0 141 551 A1 10 October 1984.
5. S. UEDAIRA, European Patent Publication number 0 104 002 A1 24 August 1983.