Electronics Letters
Electronics Letters > 1975 > 11 > 8 > 169 - 170
Electronics Letters > 1975 > 11 > 17 > 405 - 406
Electronics Letters > 1975 > 11 > 22 > 545 - 547
Electronics Letters > 1975 > 11 > 24 > 570 - 572
Electronics Letters > 1975 > 11 > 24 > 599 - 600