Sources

Every source backing a fact on CHI 1991's own page, deduplicated — the same source backing several facts appears once.

• https://en.wikipedia.org/wiki/Conference_on_Human_Factors_in_Computing_Systems — https://en.wikipedia.org/wiki/Conference_on_Human_Factors_in_Computing_Systems
• https://github.com/sven-mayer/chi-statistics — https://github.com/sven-mayer/chi-statistics