Dimensions relies on the unpaywall data set to flag articles as Open Access and for the full text button. If a publication is not included there, then a full text button is not shown.
Definition of Open Access filters
|All OA||A free version of the publication is available (publication is either Gold, Hybrid, Bronze or Green OA)|
|Gold||Publication is published in a fully open access journal (this includes all publications with a Gold OA status in Unpaywall and those on our own fully OA list of journals)|
|Hybrid||Publication freely available under an open licence in a paid-access journal (Unpaywall OA status = Hybrid)|
|Bronze||Publication freely available on publisher's website, but without an open licence (Unpaywall OA status = Bronze)|
|Green||Publication freely available in an OA repository (Unpaywall OA status = Green, or publication type in Dimensions = Preprint)|
|Closed||No freely available version has been identified (publication is neither Gold, Hybrid, Bronze nor Green OA)|