This study tested the hypothesis that references to an article in Wikipedia affects the article's citation trends. A measure citation "propensity" was created, which measures the likelihood of an article being cited more than what is to be expected by chance. Using statistics in the Scopus database and this measure, it was found that while the number of citations to an article does increase in number over time, citation propensity does not increase for an article after it is referenced in Wikipedia, meaning that references to an article in Wikipedia does not affect the article's citation trends. 

Impact of Wikipedia on citation trends

Large differences between new information added to Wikipedia written about in scientific works and articles that were not added to Wikipedia imply causation - adding new citations to Wikipedia articles increases the number of times those works are cited outside of Wikipedia

Science is shaped by wikipedia: Evidence from a randomized control trial

- "Impact of Wikipedia on citation trends"
- "Science is shaped by wikipedia: Evidence from a randomized control trial"

University of California, Berkeley

University of Michigan - Ann Arbor

Multiple studies have reported a correlation between the number of journal citations on Wikipedia and the number of citations in academic publications.

Relationship between Wikipedia citations and academic citation count

- "Bridging the gap between Wikipedia and academia"
- "Scientific citations in Wikipedia"
- "Exploring the Use of Social Media to Measure Journal Article Impact"
- "A Comparative Study of Academic impact and Wikipedia Ranking"
- "The visibility of Wikipedia in scholarly publications"
- "Are Wikipedia citations important evidence of the impact of scholarly articles and books?"
- "Maximize visibility: A way to increase citation frequency"
- "A study of citations to Wikipedia in scholarly publications"
- "Science is shaped by wikipedia: Evidence from a randomized control trial"
- "Amplifying the impact of open access: Wikipedia and the diffusion of science"

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