Convergence of an adaptive echo cancellation system with an augmented predictor. - Alex C. Orgren; N. R. Malik; Dae H. Youn (ICASSP, 1986)

Noise cancellation with improved residuals. - Alex C. Orgren; Soura Dasgupta; Charles E. Rohrs; N. R. Malik (IEEE Trans. Signal Process., 1991)