Addendum to M. L. Patrick Paper CACM April, 1974 Simmons, G. C. parallelism, polynomial root finding, real zeros 5.15 CA740410 JB February 1, 1978 10:36 AM 2660 4 2660 2266 5 2660 2660 5 2660 2660 5 2660 2660 5 2660