1. a Fraunhofer-Institut für Silicatforschung , Neunerplatz 2, D-97082 , Würzburg
2. b Technische Universität Berlin , Gustav-Meier-Allee 25, D-13355 , Berlin , Germany
3. c Ericsson Components AB , S-164, 81 , Kista-Stockholm , Sweden
4. d IMC-Microsystems , Teknikringen 3, S-583, 30 , Linköping , Sweden
5. e Motorola SPS , 207 Route de Ferney, P.O. Box 15, 1218 , Geneva , Switzerland
6. f BULL, VLSI Packaging , Rue Jean-Jaures – BP 68, F-78340 , Les Clayes-sous-Bois , France
7. g W.C. Heraeus, Thickfilm, Heraeusstr , 12–14, D-63450 , Hanau , Germany