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* {{Cite journal|title = The search engine manipulation effect (SEME) and its possible impact on the outcomes of elections|url = http://www.pnas.org/content/112/33/E4512|journal = Proceedings of the National Academy of Sciences|date = 2015-08-18|issn = 0027-8424|pmid = 26243876|pages = E4512–E4521|volume = 112|issue = 33|doi = 10.1073/pnas.1419828112|first = Robert|last = Epstein |authorlink1=Robert Epstein|first2 = Ronald E.|last2 = Robertson|pmc=4547273}}
* {{Cite news|url=https://promarket.org/unprecedented-power-digital-platforms-control-opinions-votes/|title=The Unprecedented Power of Digital Platforms to Control Opinions and Votes -|last=Epstein|first=Robert|date=2018-04-12|work=|access-date=2018-05-17|language=en-US}}
[[Category:Internet search engines]]
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