Modified Graeffe Method (Algorithm 256 [C2]) CACM June, 1965 Grau, A. A. CA650613 JB March 6, 1978 10:10 PM 1242 5 1242 1242 5 1242 1242 5 1242 1667 5 1242 178 6 1242 1242 6 1242 327 6 1242