Green open access policies of scholarly journal publishers: a study of what, when, and where self-archiving is allowed

http://hanken.halvi.helsinki.fi/portal/files/2323707/Lakso_2014_Green_OA_Policies_Accepted_Version_.pdf "Of the 1,1 million articles included in the analysis, 80.4% could be uploaded either as an accepted manuscript or publisher version to an institutional or subject repository after one year of publication. Publishers were found to be substantially more permissive with allowing accepted manuscripts on personal webpages (78.1% of articles) or in institutional repositories (79.9%) compared to ..