IBM Enterprise System/9000 Type 9121 system controller and memory subsystem design. - Brian W. Curran; Manfred H. Walz (IBM J. Res. Dev., 1991)

Event monitoring in highly complex hardware systems. - Thomas Buechner; Rolf Fritz; Peter Guenther; Markus M. Helms; Kirk D. Lamb; Manfred Loew; Thomas Schlipf; Manfred H. Walz (IBM J. Res. Dev., 1999)

The structure of chips and links comprising the IBM eServer z990 I/O subsystem. - Edward W. Chencinski; Michael J. Becht; Tim E. Bubb; Carolynn G. Burwick; Juergen Haess; Markus M. Helms; Joseph M. Hoke; Thomas Schlipf; Jeffrey M. Turner; Hartmut Ulland; Manfred H. Walz; Carl H. Whitehead; et al. (IBM J. Res. Dev., 2004)

Design and verification of the IBM System z10 I/O subsystem chips. - Thomas Schlipf; Markus M. Helms; Jürgen Ruf; M. Klein; Rainer Dorsch; B. Hoppe; Walter Lipponer; S. Boekholt; T. Rower; Manfred H. Walz; S. Junghans (IBM J. Res. Dev., 2009)