Electronics Letters
Electronics Letters > 1990 > 26 > 10 > 622 - 624
Electronics Letters > 1991 > 27 > 25 > 2383 - 2385
Electronics Letters > 1992 > 28 > 14 > 1295 - 1296
Electronics Letters > 1992 > 28 > 23 > 2160 - 2162
Electronics Letters > 1993 > 29 > 5 > 492 - 493
Electronics Letters > 1993 > 29 > 24 > 2146 - 2148