Your can use the library's WorldCat catalog or databases to find articles. When using databases choose the database best suited to your particular topic. Or ask the librarian at the reference desk if you need help figuring out which databases might be best.
You can search for periodical articles by the author, title or keyword using databases in the subject list or the A to Z List of library databases.
When choosing a format such as Text or PDF when downloading an article, select PDF if offered, as this will ensure that any images, charts or graphs will be preserved.