1. 20th Conf. on Solid State Devices and Materials;Kotani,1988
2. Proc. 6th VLSI Multilevel Interconnection Conf.;Horn,1989
3. Proc. 6th VLSI Multilevel Interconnection Conf.;Forester,1989
4. Proc. 6th VLSI Multilevel Interconnection Conf.;Marks,1989