A time-to-voltage converter and analog memory for colliding beam detectors. - Andrew E. Stevens; Richard Van Berg; Jan Van der Spiegel; Hugh H. Williams (IEEE J. Solid State Circuits, 1989)

A CMOS time to digital converter IC with 2 level analog CAM. - Eric J. Gerds; Jan Van der Spiegel; Richard Van Berg; Hugh H. Williams; Ludwig G. A. Callewaert; W. Eyckmans; Willy Sansen (IEEE J. Solid State Circuits, 1994)