12.1 3D ultrasonic gesture recognition. - Richard J. Przybyla; Hao-Yen Tang; Stefon E. Shelton; David A. Horsley; Bernhard E. Boser (ISSCC, 2014)

3D Ultrasonic Rangefinder on a Chip. - Richard J. Przybyla; Hao-Yen Tang; André Guedes 002; Stefon E. Shelton; David A. Horsley; Bernhard E. Boser (IEEE J. Solid State Circuits, 2015)