The z990 first error data capture concept. - Stefan Koerner; Rainer Bawidamann; Wolfgang Fischer 001; Ulrich Helmich; Daniel Klodt; Brian K. Tolan; Paul A. Wojciak (IBM J. Res. Dev., 2004)

Redundant I/O interconnect. - Ulrich Helmich; Michael Becht; Michael J. Becht; Janet R. Easton; Richard K. Errickson; Tobias Gehrmann; Steven G. Glassen; Seth R. Greenspan; Frank Koeble; Helge Lehmann; Carl Mayer; Jonathan S. Nikfarjam; et al. (IBM J. Res. Dev., 2007)

Enhanced I/O subsystem recovery and availability on the IBM System z9. - Kenneth J. Oakes; Ulrich Helmich; Andreas Kohler; Andrew W. Piechowski; Martin Taubert; John S. Trotter; Joachim von Buttlar; Robert M. Whalen Jr. (IBM J. Res. Dev., 2007)