Electronics Letters
Electronics Letters > 1989 > 25 > 8 > 516 - 517
Electronics Letters > 1989 > 25 > 13 > 830 - 831
Electronics Letters > 1989 > 25 > 16 > 1103 - 1104
Electronics Letters > 1989 > 25 > 17 > 1147 - 1148
Electronics Letters > 1989 > 25 > 25 > 1717 - 1718
Electronics Letters > 1990 > 26 > 13 > 889 - 891
Electronics Letters > 1992 > 28 > 10 > 903 - 905