If you already have a journal citation from an existing bibliography or some other source, use this tool to find the article:
All Databases > Subject Areas Select a discipline to view databases associated with that field of study, review the information about database content, and select a database to begin searching.
WorldCat Not just a book catalog, WorldCat can search for articles too. Select Articles above the search box and search for authors or keywords.
Directory of Open Access Journals A compilation of open-access journals.
Although not a database, this specialized search engine retrieves conference proceedings, as well as articles, and interfaces well with OhioLINK collections; see how to set preferences here