On the spectrum of pseudo noise. - William A. Gardner; Chih-Kang Chen (Proc. IEEE, 1986)

Spectral Correlation of Modulated Signals: Part II-Digital Modulation. - William A. Gardner; William A. Brown III; Chih-Kang Chen (IEEE Trans. Commun., 1987)

Interference-tolerant time-difference-of-arrival estimation for modulated signals. - William A. Gardner; Chih-Kang Chen (IEEE Trans. Acoust. Speech Signal Process., 1988)

Signal-selective time-difference of arrival estimation for passive location of man-made signal sources in highly corruptive environments. II. Algorithms and performance. - Chih-Kang Chen; William A. Gardner (IEEE Trans. Signal Process., 1992)

Signal-selective time-difference-of-arrival estimation for passive location of man-made signal sources in highly corruptive environments. I. Theory and method. - William A. Gardner; Chih-Kang Chen (IEEE Trans. Signal Process., 1992)