ExtraVision (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "ExtraVision" in English language version.

Last modified: 21:49:10, 5 September 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

107books.google.com

3^rd place

3^rd place

55worldradiohistory.com

127^th place

68^th place

7^th place

7^th place

4^th place

4^th place

880^th place

578^th place

low place

low place

409^th place

260^th place

11richardgingras.com

low place

low place

low place

7,540^th place

377^th place

206^th place

613^th place

442^nd place

11holycross.edu

low place

low place

1,124^th place

531^st place

11utpjournals.press

low place

low place

2^nd place

2^nd place

books.google.com (Global: 3^rd place; English: 3^rd place)

Graziplene, Leonard R. (2000). Teletext: Its Promise and Demise. Lehigh University Press. ISBN 9780934223645.
Renner-Smith, Susan (September 1984). "Teletext decoder for network-TV 'magazine'". Popular Science. p. 40.
Technology, United States Congress House Committee on Science and Technology Subcommittee on Science, Research, and (1984). Developing Technologies for Television Captioning: Benefits for the Hearing Impaired : Hearing Before the Subcommittee on Science, Research, and Technology of the Committee on Science and Technology, U.S. House of Representatives, Ninety-eighth Congress, First Session, November 9, 1983. U.S. Government Printing Office. pp. 35, 36.{{cite book}}: CS1 maint: multiple names: authors list (link)
Technology, United States Congress House Committee on Science and Technology Subcommittee on Science, Research, and (1984). Developing Technologies for Television Captioning: Benefits for the Hearing Impaired : Hearing Before the Subcommittee on Science, Research, and Technology of the Committee on Science and Technology, U.S. House of Representatives, Ninety-eighth Congress, First Session, November 9, 1983. U.S. Government Printing Office.{{cite book}}: CS1 maint: multiple names: authors list (link)
Marketing Communications. United Business Publications. 1981. pp. 71, 72.
Hirsh, Phil (April 11, 1983). "FCC Allows TV Broadcasters to Offer Teletext". Computerworld. p. 14.
Downey, Gregory J. (2008-02-25). Closed Captioning: Subtitling, Stenography, and the Digital Convergence of Text with Television. JHU Press. p. 224. ISBN 978-0-8018-8710-9.

deseret.com (Global: 1,124^th place; English: 531^st place)

Hollstein, Milton (1992-03-30). "KSL'S TELETEXT OFFERINGS ARE PROVING PROFITABLE". Deseret News. Retrieved 2023-08-04.

doi.org (Global: 2^nd place; English: 2^nd place)

Gillies, Donald (1989). Technological Determinism In Canadian Telecommunications: Telidon Technology, Industry and Government. Ryerson Polytechnical Institute. p. 6. doi:10.22230/cjc.1990v15n2a549 (inactive 12 July 2025).{{cite book}}: CS1 maint: DOI inactive as of July 2025 (link)

engadget.com (Global: 613^th place; English: 442^nd place)

"Hitting the Books: The decades-long fight to bring live television to hearing impaired viewers". Engadget. 29 January 2022. Retrieved 2023-07-17.

holycross.edu (Global: low place; English: low place)

crossworks.holycross.edu

"CAPTION UPDATE". The Silent Informer. 1 April 1984. Retrieved 17 July 2023.

mb21.co.uk (Global: low place; English: low place)

teletext.mb21.co.uk

Ellers, Ed. "TELETEXT GALLERY - TELETEXT AROUND THE WORLD - UNITED STATES OF AMERICA". The Teletext Museum.

nytimes.com (Global: 7^th place; English: 7^th place)

Ap (1983-04-05). "CBS STARTS ITS TELETEXT SERVICE". The New York Times. ISSN 0362-4331. Retrieved 2022-12-15.
"THE CITY; CBS Captioning Urged by the Deaf". The New York Times. Associated Press. 1982-05-20. ISSN 0362-4331. Retrieved 2023-07-17.

richardgingras.com (Global: low place; English: low place)

Gingras, Richard (1980). Broadcast Teletext. PBS.

slate.com (Global: 409^th place; English: 260^th place)

Shafer, Jack (2009-01-06). "How the newspaper industry tried to invent the Web but failed". Slate Magazine. Retrieved 2022-12-15.

ufl.edu (Global: 880^th place; English: 578^th place)

iml.jou.ufl.edu

Carlson, David. "ExtraVision". David Carlson's Online Timeline. Retrieved 2022-12-15.

upi.com (Global: 377^th place; English: 206^th place)

"Deaf picket CBS stations over captioning - UPI Archives". UPI. Retrieved 2023-07-17.

utpjournals.press (Global: low place; English: low place)

cjc.utpjournals.press

Gillies, Donald (1989). Technological Determinism In Canadian Telecommunications: Telidon Technology, Industry and Government. Ryerson Polytechnical Institute. p. 6. doi:10.22230/cjc.1990v15n2a549 (inactive 12 July 2025).{{cite book}}: CS1 maint: DOI inactive as of July 2025 (link)

wbtv.com (Global: low place; English: 7,540^th place)

"Timeline - WBTV Chronology". WBTV. March 27, 2009. Retrieved 2022-12-15.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Ap (1983-04-05). "CBS STARTS ITS TELETEXT SERVICE". The New York Times. ISSN 0362-4331. Retrieved 2022-12-15.
"THE CITY; CBS Captioning Urged by the Deaf". The New York Times. Associated Press. 1982-05-20. ISSN 0362-4331. Retrieved 2023-07-17.

worldradiohistory.com (Global: 127^th place; English: 68^th place)

"KNXT, KCET raise curtain on teletext" (PDF). World Radio History. 13 April 1981. Retrieved 4 August 2023.
"Affiliate exhorted to support Extravision" (PDF). World Radio History. Retrieved 4 August 2023.
"Battle over teletext" (PDF). World Radio History. 21 March 1983. Retrieved 4 August 2023.
"CBS makes changes, cuts, at Extravision teletext service" (PDF). World Radio History. 19 May 1986. Retrieved 4 August 2023.
"Decoder problems plague NBC's try at teletext" (PDF). World Radio History. 17 December 1984. Retrieved 4 August 2023.