Class AB CMOS amplifiers with high efficiency. - Ludwig G. A. Callewaert; Willy M. C. Sansen (IEEE J. Solid State Circuits, 1990)

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)

ADMIRE: advanced mixed signal design environment. - Philippe Reynaert; Ludwig G. A. Callewaert; Georges G. E. Gielen; Geert Debyser; Koen Lampaert; Francky Leyn; Geert Van der Plas; Willy Sansen; Birger Schneider; René Bloch; Dave Orton; Steve Boardman; et al. (ICECS, 1996)