Electronics Letters
Electronics Letters > 1970 > 6 > 5 > 141 - 142
Electronics Letters > 1970 > 6 > 17 > 550 - 551
Electronics Letters > 1970 > 6 > 24 > 778 - 779
Electronics Letters > 1970 > 6 > 24 > 771 - 773
Electronics Letters > 1970 > 6 > 25 > 804 - 805