An Orthogonal Least Squares based approach to FIR designs. - Xiaofeng Wu; Zi Qiang Lang; Stephen A. Billings (Int. J. Autom. Comput., 2005)

Output Frequencies of A Class of Nonlinear Systems. - Xiaofeng Wu; Zi Qiang Lang; Stephen A. Billings (ICECS, 2006)

Output Frequencies of Nonlinear Systems Under A General Input. - Xiaofeng Wu; Zi Qiang Lang; Stephen A. Billings (ICNSC, 2007)

Output frequency response function of nonlinear Volterra systems. - Zi Qiang Lang; Stephen A. Billings; R. Yue; J. Li (Autom., 2007)

New bound characteristics of NARX model in the frequency domain. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Int. J. Control, 2007)

Correction on some typos in "New bound characteristics of NARX model in the frequency domain". - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Int. J. Control, 2007)

Non-linear output frequency response functions for multi-input non-linear Volterra systems. - Z. K. Peng; Zi Qiang Lang; Stephen A. Billings (Int. J. Control, 2007)

An Algorithm for Determining the Output Frequency Range of Volterra Models With Multiple Inputs. - Hua-Liang Wei; Zi Qiang Lang; Stephen A. Billings (IEEE Trans. Circuits Syst. II Express Briefs, 2007)

Analysis of Output Frequencies of Nonlinear Systems. - Xiaofeng Wu; Zi Qiang Lang; S. A. Billings (IEEE Trans. Signal Process., 2007)

Magnitude bounds of generalized frequency response functions for nonlinear Volterra systems described by NARX model. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Autom., 2008)

Frequency domain analysis for non-linear Volterra systems with a general non-linear output function. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Int. J. Control, 2008)

Mapping from parametric characteristics to generalized frequency response functions of non-linear systems. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Int. J. Control, 2008)

The design of energy transfer filters for energy focus filtering. - Xiaofeng Wu; Zi Qiang Lang; Stephen A. Billings (Int. J. Control, 2008)

Constructing an overall dynamical model for a system with changing design parameter properties. - Hua-Liang Wei; Zi Qiang Lang; Stephen A. Billings (Int. J. Model. Identif. Control., 2008)

Parametric Characteristic Analysis for Generalized Frequency Response Functions of Nonlinear Systems. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Circuits Syst. Signal Process., 2009)

Frequency-Dependent Magnitude Bounds of the Generalized Frequency Response Functions for NARX Model. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Eur. J. Control, 2009)

Analytical Description of the Frequency Response Function of the Generalized Higher Order Duffing Oscillator Model. - Bin Zhang 021; Stephen A. Billings; Zi Qiang Lang; Geoffrey R. Tomlinson (IEEE Trans. Circuits Syst. I Regul. Pap., 2009)

Nonlinear influence in the frequency domain: Alternating series. - Xing Jian Jing; Zi Qiang Lang; Stephen A. Billings (Syst. Control. Lett., 2011)

Characterizing nonlinear Spatio-Temporal Systems in the Frequency Domain. - Yuzhu Guo; Lingzhong Guo; S. A. Billings; Daniel Coca; Zi Qiang Lang (Int. J. Bifurc. Chaos, 2012)

A Volterra series representation for a class of nonlinear infinite dimensional systems with periodic boundary conditions. - Lingzhong Guo; Yuzhu Guo; S. A. Billings; Daniel Coca; Zi Qiang Lang (Syst. Control. Lett., 2013)

A parametric frequency response method for non-linear time-varying systems. - Yuzhu Guo; Lingzhong Guo; S. A. Billings; Daniel Coca; Zi Qiang Lang (Int. J. Syst. Sci., 2014)

A comparative study on the evaluation of Nonlinear Output Frequency Response Functions (NOFRFs) of nonlinear systems. - Hang Zhang; Zi Qiang Lang; Yun Peng Zhu (ICAC, 2016)