Steady-state errors in discrete-time control systems. - Irwin W. Sandberg; Lilian Xu (Autom., 1993)

Uniform Approximation and Gamma Networks. - Irwin W. Sandberg; Lilian Xu (Neural Networks, 1997)

Approximation of Myopic Systems Whose Inputs Need Not Be Continuous. - Irwin W. Sandberg; Lilian Xu (Multidimens. Syst. Signal Process., 1998)