Electronics Letters
Electronics Letters > 1989 > 25 > 2 > 136 - 137
Electronics Letters > 1989 > 25 > 12 > 768 - 770
Electronics Letters > 1989 > 25 > 13 > 823 - 824
Electronics Letters > 1989 > 25 > 15 > 975 - 976
Electronics Letters > 1989 > 25 > 20 > 1377 - 1378
Electronics Letters > 1989 > 25 > 20 > 1359 - 1360
Electronics Letters > 1989 > 25 > 25 > 1731 - 1732