If you are on campus a Google Scholar search will help to identify items fulll text articles that are availalbe through library subsriptions and holdings. On campus and off campus, Google Scholar will greatly expand your search results.
Marshall Digital Scholar (MDS) is an Institutional Repository (IR). Institutional Repositories (IRs) bring together all of a University's research under one umbrella, with an aim to preserve and provide access to that research. IRs are an excellent vehicle for working papers or copies of published articles and conference papers. Presentations, senior theses, and other works not published elsewhere can also be published in the IR.