Abstract：Using the accelerating techniques, a new simultaneous method for finding all complex zeros in circular
interval arithmetic was proposed. The convergence theorem and the conditions for convergence were
considered.The iteration has convergence of order 7 without computing derivatives
孙方裕. 一个并行计算多项式全部零点的圆盘迭代法[J]. 浙江大学学报（理学版）, 2000, 27(4): 355-360.
SUN Fang-yu. A circular iteration for simultanoeus finding all zeros of polynomial. . Journal of ZheJIang University(Science Edition), 2000, 27(4): 355-360.
