If UT doesn't have a subscription or other paid access to a restricted journal, you can look for open versions of a paper. These include preprints, post-publication copies, or peer-reviewed accepted manuscripts -- that have been deposited in open, legal repositories. (This is known as "Green Open Access.") You can also contact the author and ask for a copy.
There are browser add-ons that can automatically perform a search for free versions when you land on a paywalled article:
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