ESA/390 Integrated Cryptographic Facility: An Overview. - Phil C. Yeh; Ronald M. Smith Sr. (IBM Syst. J., 1991)

Coordination of time-of-day clocks among multiple systems. - Noshir R. Dhondy; Richard J. Schmalz; Ronald M. Smith Sr.; Julian Thomas; Phil C. Yeh (IBM J. Res. Dev., 1992)

Integrated Cryptographic Facility of the Enterprise Systems Architecture/390: Design considerations. - Ronald M. Smith Sr.; Phil C. Yeh (IBM J. Res. Dev., 1992)

S/390 CMOS Cryptographic Coprocessor Architecture: Overview and design considerations. - Phil C. Yeh; Ronald M. Smith Sr. (IBM J. Res. Dev., 1999)

IBM System z10 performance improvements with software and hardware synergy. - Kathryn M. Jackson; M. A. Wisniewski; D. Schmidt; U. Hild; Stephen Heisi; Phil C. Yeh; Wolfgang Gellerich (IBM J. Res. Dev., 2009)