To retrieve articles you've requested via ILL, you can either click the link in the email you received about it, or use the direct link on the library homepage.
On the next page, you'll click the Illiad Interlibrary Loan System link and log in using your UD username and password. Once logged in, you'll click the "Articles or Book Chapters Received" link on the left hand side. To view the document, click on the PDF icon in the View column. Unless you delete them, these will stay in your account for one year.