References

Becker, R. A., and J. M. Chambers. 1984. S: An Interactive Environment for Data Analysis and Graphics. Belmont, CA: Wadsworth.

Free Software Foundation. 2026. “What Is Free Software?” https://www.gnu.org/philosophy/free-sw.html.

Norsk Teknisk Museum. 2014. “22.0 IBM - Modell 360 / 370.” Photograph. Norsk Telemuseum. September 10, 2014. https://digitaltmuseum.no/011015240147/22-0-ibm-modell-360-370.