ECG biometrics: A robust short-time frequency analysis. - Ikenna Odinaka; Po-Hsiang Lai; Alan David Kaplan; Joseph A. O'Sullivan; Erik J. Sirevaag; Sean D. Kristjansson; Amanda K. Sheffield; John W. Rohrbaugh (WIFS, 2010)

Laser Doppler vibrometry measures of physiological function: evaluation of biometric capabilities. - Mei Chen; Joseph A. O'Sullivan; Naveen Singla; Erik J. Sirevaag; Sean D. Kristjansson; Po-Hsiang Lai; Alan David Kaplan; John W. Rohrbaugh (IEEE Trans. Inf. Forensics Secur., 2010)