[1] C. Davis, Extrema of a polynomial, Amer. Math. Monthly, 64 (1957) , 679-680.
[2] W. J. Kammerer, Polynomial approximation to finitely oscillating function, Math. Comput., 15(1961) , 115-119.
[3] R. S. Varga, Matrix Iterative Analysis, Prentice-Hall, Englewood Cliffs, N. J., 1962. |