Pillai,S U, Shim, T.I., Batalama, S N, Kazakos, D, Daum, F. "Spectral Estimation and Modeling The electrical Engineering Handbook Ed. Richard C. dorf Boca Raton CRC Press llc. 2000Pillai, S.U., Shim, T.I., Batalama, S.N., Kazakos, D., Daum, F. “Spectral Estimation and Modeling” The Electrical Engineering Handbook Ed. Richard C. Dorf Boca Raton: CRC Press LLC, 2000