Multiple-logical-channel subsystems: Increasing zSeries I/O scalability and connectivity. - Les W. Wyman; Harry M. Yudenfriend; John S. Trotter; Kenneth J. Oakes (IBM J. Res. Dev., 2004)

zAAPs and zIIPs: Increasing the strategic value of System z. - Les W. Wyman; José Castaño; Jeffrey P. Kubala; Robert J. Maddison; Bernard R. Pierce; Robert R. Rogers (IBM J. Res. Dev., 2007)