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Encyclopedic overview
Template documentation
Use {{free access}} to indicate manually that a publication is available to be read freely. Use {{open access}} for open access publications. For citations input with citation templates such as {{cite journal}}, use the relevant parameters (such as |doi-access=free) to indicate the access level for a given identifier.
Excerpted from Wikipedia’s “Template:Free access” article, available under the CC BY-SA 4.0 licence.