Traffic Service Position System No. 1B: Software Development System. - T. G. Hack; T. Huang; L. C. Stecher (Bell Syst. Tech. J., 1983)

The 5ESS switching system: Operational software. - John P. Delatore; Rudolph J. Frank; Hans Oehring; L. C. Stecher (AT&T Tech. J., 1985)

Implementation of ISDN on the 5ESS Switch. - John P. Delatore; Hans Oehring; L. C. Stecher (IEEE J. Sel. Areas Commun., 1986)