Electronics Letters
Electronics Letters > 1979 > 15 > 7 > 202 - 203
Electronics Letters > 1980 > 16 > 23 > 889 - 891
Electronics Letters > 1985 > 21 > 21 > 965 - 966
Electronics Letters > 1986 > 22 > 24 > 1277 - 1278
Electronics Letters > 1992 > 28 > 16 > 1503 - 1505
Electronics Letters > 1993 > 29 > 8 > 661 - 662