UNIX System V (English Wikipedia)

Tanenbaum, Andrew S. (2001). Modern Operating Systems (2nd ed.). Upper Saddle River, NJ: Prentice Hall. p. 675. ISBN 0-13-031358-0. Whatever happened to System IV is one of the great unsolved mysteries of computer science.
Bach, Maurice (1986), The Design of the UNIX Operating System, Prentice Hall, Bibcode:1986duos.book.....B, ISBN 0-13-201799-7
Correia, Edward J. (15 June 2004). "SCO Steps Into Embedded Market With Smallfoot". Software Development Times. No. 106. p. 25. Retrieved 24 May 2024.

archive.today

Levine, John R. (2000) [October 1999]. "Chapter 10: Dynamic Linking and Loading". Linkers and Loaders. The Morgan Kaufmann Series in Software Engineering and Programming (1 ed.). San Francisco, USA: Morgan Kaufmann. ISBN 1-55860-496-0. OCLC 42413382. Archived from the original on 2013-01-26. Retrieved 2020-01-12. Code: [1].
SCO UNIX Roadmap at Archive.is

"UNIX System V and add on applications prices" (PDF). AT&T International. 24 February 1983. Retrieved 24 January 2024.

Eric S. Raymond, A buyer's guide to UNIX versions for PC-clone hardware, posted to Usenet November 16, 1994.
Eric S. Raymond (16 November 1994). "PC-clone UNIX Software Buyer's Guide". Retrieved 6 May 2014.
Eric S. Raymond (16 November 1994). "PC-clone UNIX Software Buyer's Guide". Retrieved 3 February 2014.
Vinod Valloppillil (11 August 1998). "Open Source Software: A (New?) Development Methodology". Retrieved 3 February 2014.

William Fellows (13 August 1992). "Unix International reviews the Unix System V.4 story so far". Computer Business Review. Archived from the original on 2009-02-21. Retrieved 2008-10-31.

Tom Yager (19 November 2001). "Vital Signs for Unix". Computerworld. Retrieved 5 June 2015.
Mark Hall (15 May 2006), The End of Unix?, retrieved 5 June 2015
Patrick Thibodeau (12 December 2013). "As Unix fades away from data centers, it's unclear what's next". Archived from the original on 2015-05-20. Retrieved 6 June 2015.

Levine, John R. (2000) [October 1999]. "Chapter 10: Dynamic Linking and Loading". Linkers and Loaders. The Morgan Kaufmann Series in Software Engineering and Programming (1 ed.). San Francisco, USA: Morgan Kaufmann. ISBN 1-55860-496-0. OCLC 42413382. Archived from the original on 2013-01-26. Retrieved 2020-01-12. Code: [1].

Deni Connor (August 19, 2003). "SCO updates Unix, OpenServer product plans". InfoWorld.

Lévénez, Éric. "Unix History (Unix Timeline)". Archived from the original on 2002-08-02. Retrieved 2010-12-29.

Julie Sartain (19 August 2013). "The Last Days of Unix". Network World. Retrieved 9 January 2024.

Overview of the XENIX 286 Operating System (PDF). Intel Corporation. November 1984. p. 1.10. There was no System IV.

Lévénez, Éric. "Unix History (Unix Timeline)". Archived from the original on 2002-08-02. Retrieved 2010-12-29.
Unix Internatl. and USL release early version of SVR4 multiprocessing software, 17 June 1991, archived from the original on 2010-01-11, retrieved 2009-04-22
William Fellows (13 August 1992). "Unix International reviews the Unix System V.4 story so far". Computer Business Review. Archived from the original on 2009-02-21. Retrieved 2008-10-31.
Patrick Thibodeau (12 December 2013). "As Unix fades away from data centers, it's unclear what's next". Archived from the original on 2015-05-20. Retrieved 6 June 2015.

Jeff Tye (10 July 1989). "Other OSs That Run Unix on a 386". InfoWorld: 62. ISSN 0199-6649.
Levine, John R. (2000) [October 1999]. "Chapter 10: Dynamic Linking and Loading". Linkers and Loaders. The Morgan Kaufmann Series in Software Engineering and Programming (1 ed.). San Francisco, USA: Morgan Kaufmann. ISBN 1-55860-496-0. OCLC 42413382. Archived from the original on 2013-01-26. Retrieved 2020-01-12. Code: [1].