1.B. D. Rao and R. Peng, “Tracking Analysis of an ARMA Parameter Estimation Algorithm,” IEEE Transactions on Automatic Control, Vol. 35:2, Pages: 247-250, Feb. 1990

2.B. D. Rao, “Relationship between Matrix Pencil and State Space Based Harmonic Retrieval Methods,” IEEE Transactions on Acoustics, Speech and Signal Processing, 38:1, Pages: 177-179, Jan. 1990

3.B. D. Rao, “Some New Properties of the LMS FIR-ALE,” IEEE International Conference on Acoustics, Speech and Signal Processing, Albuquerque, NW, Pages: 1241-1244, Apr. 1990

4.B. D. Rao and K. V. S. Hari, “Effect of Spatial Smoothing on Noise Subspace Methods,” IEEE International Conference on Acoustics, Speech and Signal Processing, Albuquerque, NM, Pages: 2687-2690, Apr. 1990

5.B. D. Rao and K. V. S. Hari, “Effect of Spatial Smoothing on the Performance of MUSIC and the Minimum-Norm Method,” IEEE Part F: Radar and Signal Processing, Vol. 137:6, Pages: 449-458, Dec. 1990