Video Surveillance for Biometrics: Long-Range Multi-biometric System. - Faisal I. Bashir; David Usher; Pablo Casaverde; Marc Friedman (AVSS, 2008)

Simultaneous Capture of Iris and Retina for Recognition. - David Usher; Yasunari Tosa; Marc Friedman (Encyclopedia of Biometrics, 2009)

Simultaneous Capture of Iris and Retina for Recognition. - David Usher; Yasunari Tosa; Marc Friedman (Encyclopedia of Biometrics, 2015)