1.B. D. Rao, “Signal Processing with the Sparseness Constraint,” IEEE Acoustics, Speech and Signal Processing, Seattle, Washington, Vol.1, Pages: 369 - 372, May. 1998

2.K. K-Delgado and B. D. Rao, “Measures and Algorithms for Basis Selection,” IEEE Acoustics, Speech and Signal Processing, Seattle, Washington, Vol. 3, Pages: 1881-1884, May. 1998

3.M.N. Murthi, K. K-Delgado and B. D. Rao, “A New Algorithm and Entropy-like Measures for Sparse Coding,” Institute for Neural Computation, Vol. 8, Pages: 85-92, May. 1998

4.B. D. Rao and K. K-Delgado, “Sparse Solutions to Linear Inverse Problems with Multiple Measurement Vectors,” Eighth IEEE Digital Signal Processing Workshop, Aug. 1998

5.K. K-Delgado and B. D. Rao, “Gradient Factorization-Based Algorithm for Best-Basis Selection,” Eighth IEEE Digital Signal Processing Workshop, Aug. 1998

6.B. D. Rao, K. K-Delgado, and S. Dharanipragada, “Improving Spectral Resolution Using Basis Selection,” Proceedings of the Ninth IEEE Signal Processing Workshop on Statistical Signal and Array Processing, Pages: 336-339, Sep. 1998

7.B. D. Rao and K. K-Delgado, “Basis Selection in the Presence of Noise,” IEEE Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Vol. 1, Pages: 752-756,  Nov. 1998

8.K. K-Delgado and B. D. Rao, “Application of Concave/Schur-Concave Functions to the Learning of Overcomplete Dictionaries and Sparse Representations,” IEEE Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Vol. 1, Pages: 546-550,  Nov. 1998