This plugin sends the article's reference data to Crossref when the DOI is registered, and also displays the DOI for any references found in the Crossref database.
Step 1 Log in to your OJS admin account, then open the Website menu. On the Website Settings page, select the Plugins tab and click Installed Plugins.

Step 2 Use the Ctrl+F keyboard shortcut to search for the keyword "Crossref", then check the box next to Crossref Reference Linking to enable the plugin.

Once the box is checked, the Crossref Reference Linking plugin is automatically enabled and ready to use.