A good way to find peer-reviewed research is to search the library databases.
Library Quick Search (LQS) - covers many but not all UTSA-subscribed databases from a single search box. You can filter for Spanish language, journal articles, books and videos and other options in the left hand column of the search results.
For example, searching cervantes and war (to broaden your results you might add Spanish words, for example Cervantes and guerra)
Search results screen: