Electronics Letters
Electronics Letters > 1987 > 23 > 2 > 64 - 65
Electronics Letters > 1989 > 25 > 20 > 1396 - 1398
Electronics Letters > 1991 > 27 > 13 > 1213 - 1215
Electronics Letters > 1991 > 27 > 17 > 1517 - 1518
Electronics Letters > 1993 > 29 > 16 > 1415 - 1417
Electronics Letters > 2009 > 45 > 4 > 230 - 231