Three-loop feedback control of fault-tolerant power supplies in IBM Enterprise System/9000 processors. - Kevin R. Covi (IBM J. Res. Dev., 1992)

Electronic packaging of the IBM System z196 enterprise-class server processor cage. - Thomas Strach; Frank E. Bosco; Kenneth L. Christian; Kevin R. Covi; Martin Eckert; Gregory R. Edlund; Roland Frech; Hubert Harrer; Andreas Huber; Dierk Kaller; Martin Kindscher; A. Z. Muszynski; et al. (IBM J. Res. Dev., 2012)