IBM System/4 Pi (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "IBM System/4 Pi" in Spanish language version.

refsWebsite

Global rank Spanish rank

4nasa.gov

75^th place

80^th place

3web.archive.org

1^st place

2doi.org

2^nd place

1archive.org

6^th place

5^th place

1eoportal.org

low place

1harvard.edu

18^th place

34^th place

archive.org (Global: 6^th place; Spanish: 5^th place)

«1.1 System/360 Compatibility and 2.2 System/360 Compatibility». System/4 Pi Engineering Description: Model EP. Owego, NY: Federal Systems Division of IBM. 1966. pp. 1, 4-5 (6, 9-10).

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

dx.doi.org

Stormont, D.P.; Welgan, R. (23–27 May 1994). «Risk management for the B-1B computer upgrade». Proceedings of National Aerospace and Electronics Conference (NAECON'94) 2: 1143-1149. ISBN 0-7803-1893-5. doi:10.1109/NAECON.1994.332913.
Norman, P. Glenn (1987), «The new AP101S General-Purpose Computer (GPC) for the Space Shuttle», IEEE Proceedings 75 (3): 308-319, Bibcode:1987IEEEP..75..308N, doi:10.1109/PROC.1987.13738 .

eoportal.org (Global: low place; Spanish: low place)

directory.eoportal.org

«Skylab Space Station». eoPortal. ESA. Consultado el 27 de octubre de 2013.

harvard.edu (Global: 18^th place; Spanish: 34^th place)

adsabs.harvard.edu

Norman, P. Glenn (1987), «The new AP101S General-Purpose Computer (GPC) for the Space Shuttle», IEEE Proceedings 75 (3): 308-319, Bibcode:1987IEEEP..75..308N, doi:10.1109/PROC.1987.13738 .

nasa.gov (Global: 75^th place; Spanish: 80^th place)

hq.nasa.gov

«Computers in Spaceflight: The NASA Experience». www.hq.nasa.gov. Chapter Four - Computers in the Space Shuttle Avionics System - The DPS hardware configuration. Archivado desde el original el 15 de febrero de 2017. Consultado el 15 de noviembre de 2018.
«Computers in Spaceflight: The NASA Experience - Chapter Four - Computers in the Space Shuttle Avionics System». Archivado desde el original el 11 de noviembre de 2013. Consultado el 12 de junio de 2020.

ntrs.nasa.gov

Bedford, D. P.; Markarian, H.; Pleszkoch, N. L. (Mar 1967). «Appendix E: SYSTEM 4 Pi COMPUTER CHARACTERISTICS». Study of control computers for control moment gyro stability and control systems. Volume I - Engineering. Model TC and CP-2. pp. E-1 - E-21 (126-147).

history.nasa.gov

Jenkins, Dennis (5 de abril de 2001). «Advanced Vehicle Automation and Computers Aboard the Shuttle». NASA History Homepage. NASA. Consultado el 27 de octubre de 2013.

web.archive.org (Global: 1^st place; Spanish: 1^st place)

«Computers in Spaceflight: The NASA Experience». www.hq.nasa.gov. Chapter Four - Computers in the Space Shuttle Avionics System - The DPS hardware configuration. Archivado desde el original el 15 de febrero de 2017. Consultado el 15 de noviembre de 2018.
«Computers in Spaceflight: The NASA Experience - Chapter Four - Computers in the Space Shuttle Avionics System». Archivado desde el original el 11 de noviembre de 2013. Consultado el 12 de junio de 2020.
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