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4. Feldstein, M. Alan, Firestone, Roger M.: Hermite interpolatory iteration theory and parallel numerical analysis. Report, Division of Applied Mathematics, Brown University, Providence, Rhode Island (October 1967).
5. Brent, Richard P.: The computational complexity of iterative methods for systems of nonlinear equations. Proc. Complexity Symposium. Yorktown Heights. March 1972. Plenum Press (1972).