Phase and delay approximation for 1-D digital IIR filter in the L∞norm. - Wasfi S. Kafri (Signal Process., 1997)

A unified framework for evaluating bounds on the Bayesian cost. - Wael A. Hashlamoun; Wasfi S. Kafri (Signal Process., 1998)

N-Dimensional Phase Approximation in the L∞-Norm. - Wasfi S. Kafri; Wael A. Hashlamoun (Multidimens. Syst. Signal Process., 2000)

Robust D-stability. - Wasfi S. Kafri (Appl. Math. Lett., 2002)

Characterization of best Chebychev approximation using the frequency response of IIR digital filters with convex stability. - Jamal O. Siam; Nidal M. S. Kafri; Wasfi S. Kafri (Digit. Signal Process., 2014)

Chebyshev approximation problem of multidimensional IIR digital filters in the frequency domain. - Jamal O. Siam; Wasfi S. Kafri (Multidimens. Syst. Signal Process., 2018)