Issue No. 05 - May (1979 vol. 12)
D. Michalopoulos , California State University
By the simple tactic of using two distinct types of magnetic bubbles, IBM scientists have increased the information storage density of a conventionally designed magnetic bubble device by a factor of four.
D. Michalopoulos, "New Applications & Recent Research", Computer, vol. 12, no. , pp. 89-90, May 1979, doi:10.1109/MC.1979.1658756