1. Introduction to Numerical Analysis;Hildebrand,1956
2. Numerical Methods for Scientists and Engineers;Hamming,1962
3. Complex curve fitting;Levy;IRE Transactions on Automatic Control,1959
4. Transfer function synthesis as a ratio of two complex polynomials;Sanathanan;IRE Transactions on Automatic Control,1963
5. Geometric methods for determining system poles from transient response;Henderson;Institution of Electronic and Electrical Engineers, Transactions on Acoustics, Speech Signalling,1981