Electronics Letters
Electronics Letters > 1970 > 6 > 3 > 52 - 53
Electronics Letters > 1970 > 6 > 5 > 123 - 124
Electronics Letters > 1970 > 6 > 5 > 124 - 125
Electronics Letters > 1970 > 6 > 15 > 483 - 485
Electronics Letters > 1970 > 6 > 20 > 656 - 658