1. Marple, S.L.: ‘Digital spectral analysis with applications’, (Prentice Hall 1987)
2. E. K. Miller, : ‘Natural mode methods in frequency and time domain analysis’. Lawrence Livermore Laboratory, contract w-7405-ENG-48, 1979
3. New contributions to the spectral estimation by means of parametric modelling using rational transfer functions
4. An output error model and algorithm for electromagnetic system identification
5. Dudley, D.G., and Godman, D.M.: ‘Transient identification and object classification’, Miller, E.K., Time domain measurements in electromagnetics, (Van Nostrand Reinhold 1986)