1. Arthur C. Clark, The City and the Stars (New Yrok: Harcourt, Brace & World, 1956) pp 46–58. See the afterward of this volume.
2. M.J. Ross & K.A. Garrigins, A Distributed Processing Architecture for Voice/Data Switching (GTE Systems: Nadham Heights, Mass) Also published in proceedings of NAECON ‘81 ( Dayton, Ohio, 1981 ).
3. ITU CCITT CCSS No. 7 section 2: Signaling System Structure.
4. Maurizio Decina, “Managing ISDN through International Standards Activities”, IEEE Communications, (September 1982), 19–25.
5. Anthony Durniah, “Distributed Processing Concepts)” Electronics 55, no. 25 (December 7, 1978), 120.