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2013 level of contributions for Wikimedia presently documented as 45 million dollars, the computed budget level recommended by Jaffe and Caballero for reinvestment into internal research and development is between.8 million and.3 million dollars annually. Further, Wikipedia intends to convey only knowledge that is already established and recognized. Retrieved August 26, 2013. Retrieved July 2, 2014. Metz, Cade (December 7, 2008). naisten ejakulaatio ilmaiset sexi videot "Interview With Nick Doody and Matt Kirshen". According to a study by Pnina Shachaf in the Journal of Documentation, the quality of the Wikipedia reference desk is comparable to a standard library reference desk, with an accuracy. 198 Coverage of topics and selection bias Research conducted by Mark Graham of the Oxford Internet Institute in 2009 indicated that the geographic distribution of article topics is highly uneven. The Guardian 2014 (London) The Guardian view on Wikipedia: evolving truth Archived November 12, 2016, at the Wayback Machine a b Quilter, Laura (October 24, 2012). "Inside Wikipedia Attack of the PR Industry". 199 Across 30 language editions of Wikipedia, historical articles and sections are generally Eurocentric and focused on recent events. In European conference on information retrieval (pp. "In UK, rising chorus of outrage over online misogyny". 177 178 Wales stresses that encyclopedias of any type are not usually appropriate to use as citable sources, and should not be relied upon as authoritative. A b c Black, Edwin (April 19, 2010) Wikipedia The Dumbing Down of World Knowledge Archived September 9, 2016, at the Wayback Machine, History News Network Retrieved October 21, 2014 a.