A statistical complexity measure and its applications to the analysis of heart rate variability. - Wenjiang Pei; Zhenya He; Luxi Yang; Stephen S. Hull Jr.; John Y. Cheung (ICASSP, 2000)

Computer Analysis of Heart Rate Variability. - S. H. Rai; Wenjiang Pei; Zhenya He; Luxi Yang; John Y. Cheung; Stephen S. Hull Jr. (CAINE, 2001)

A generalized Volterra series method for reconstructing deterministic dynamics from noisy chaotic time series. - Wenjiang Pei; Zhenya He; Luxi Yang; A. Song; Stephen S. Hull Jr.; John Y. Cheung (APCCAS (2), 2002)

Modeling and Characterizing Deterministic Component of Heart Rate Variability by Cluster-Weighted Filtering. - Zhenya He; Wenjiang Pei; Luxi Yang; Stephen S. Hull Jr.; John Y. Cheung (Int. J. Bifurc. Chaos, 2002)