Once you've imported the main article, you should see an option in the extension window called Show cited articles. Clicking this will let you view and import any articles we detect with a DOI or PMID:
How do I import references cited in an article?
Once you've imported the main article, you should see an option in the extension window called Show cited articles. Clicking this will let you view and import any articles we detect with a DOI or PMID: