Version 7 Unix (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Version 7 Unix" in Japanese language version.

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doi.org (Global: 2^nd place; Japanese: 6^th place)

Ritchie, Dennis M. (1984). “A Stream Input-Output System”. AT&T Bell Laboratories Technical Journal (AT&T) 63 (8): 1897–1910. doi:10.1002/j.1538-7305.1984.tb00071.x.

Timar, Ted (1994年5月30日). “A very brief look at Unix history” (英語). www.faqs.org. 2008年5月16日閲覧。