1978 SID International Symposium, San Francisco, Apr. 18-20, 1978 : 1979 SID International Symposium, Chicago, May 8-10, 1979 : 1980 SID International Symposium, San Diego, Apr. 29-May 1, 1980 : 1978 SID International Symposium, San Francisco, Apr. 18-20, 1978 : digest of technical papers. Vol. 9. 1978 IEEE International Symposium on Circuits and Systems :