TY  - JOUR
PY  - 2018//
TI  - Sci-Hub provides access to nearly all scholarly literature
JO  - Elife
A1  - Himmelstein, Daniel S.
A1  - Romero, Ariel Rodriguez
A1  - Levernier, Jacob G.
A1  - Munro, Thomas Anthony
A1  - McLaughlin, Stephen Reid
A1  - Greshake Tzovaras, Bastian
A1  - Greene, Casey S.
SP  - e32822
EP  - e32822
VL  - 7
IS  - 
N2  - The website Sci-Hub enables users to download PDF versions of scholarly articles, including many articles that are paywalled at their journal's site. Sci-Hub has grown rapidly since its creation in 2011, but the extent of its coverage has been unclear. Here we report that, as of March 2017, Sci-Hub's database contains 68.9% of the 81.6 million scholarly articles registered with Crossref and 85.1% of articles published in toll access journals. We find that coverage varies by discipline and publisher, and that Sci-Hub preferentially covers popular, paywalled content. For toll access articles, we find that Sci-Hub provides greater coverage than the University of Pennsylvania, a major research university in the United States. Green open access to toll access articles via licit services, on the other hand, remains quite limited. Our interactive browser at <ext-link ext-link-type="uri" xlink:href="https://greenelab.github.io/scihub">https://greenelab.github.io/scihub</ext-link> allows users to explore these findings in more detail. For the first time, nearly all scholarly literature is available gratis to anyone with an Internet connection, suggesting the toll access business model may become unsustainable.<br><br>© 2018, Himmelstein et al.<p />  <p>Language: en</p>
LA  - en
SN  - 2050-084X
UR  - http://dx.doi.org/10.7554/eLife.32822
ID  - ref1
ER  -