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     Theodor H. Nelson, Literary Machines, The Report on, and of, Project Xanadu concerning word processing, electronic publishing, hypertext, thinkertoys, tomorrow’s intellectual revolution, and certain other topics including knowledge, education and freedom, Swarthmore (Pa) 1981 (dattiloscritto, pubblicato in proprio); Literary Machines, Swarthmore (Pa) 1990; Literary Machines, The Report... 93.1, Mindful Press, Sausa- lito (Ca) 1993 (ultima edizione); trad. it. Literary machines 90.1: Il Progetto Xanadu, Muzzio, Padova 1992 (traduzione della versione 90.1, 1990).

     Tim Berners-Lee, Robert Cailliau, Jean-François Groff, Bernd Pollermann, “World-Wide Web: The Information Universe”, Internet Research, Vol. 2 No. 1, January 1992, pp. 52-58. Tim J. Berners-Lee, Robert Cailliau and Jean-François Groff, “The world-wide web”, Computer Networks and ISDN Systems 25, 1992, pp- 454-459.