SID Symposium Digest of Technical Papers
SID Symposium Digest of Technical Papers > 48 > 1 > 661 - 663
SID Symposium Digest of Technical Papers > 48 > 1 > 1989 - 1990
SID Symposium Digest of Technical Papers > 48 > 1 > 754 - 755
SID Symposium Digest of Technical Papers > 48 > 1 > 664 - 667