Solid State Technology.- USA

            1987: Vol 30: Number 5

            1990: Vol 33: Number 1

            1991: Vol 34: Number 3

            1992: Vol 35: Number 1, 3, 5, 6, 7, 8, 9, 10, 11

            1993: Vol 36: Number 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

            1994: Vol 37: Number 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12