Use keywords from a reference and search them the UT Libraries homepage or on Google Scholar. Say you find a paragraph like this from a recent news article:
"William Chopik, an assistant professor of psychology at Michigan State University, has found evidence of the power of optimism. He and his research colleagues studied optimism, in addition to health and activity limitations, in 2,758 older couples in a national dataset."
What are the keywords that will help you find this article?
Maybe: optimism, health, chopik? Search that on www.lib.utexas.edu:
Your results may include both the article you are searching for and other articles that cite it.