Most DOIs (Digital Object Identifiers) are registered with CrossRef. You can search articles, books, book chapters, and more at CrossRef to see if it has a. A free DOI lookup tool is available at: altmusichub.com Alternately, if you need the DOI of a journal article that's indexed in. Use the library's DOI Finder to locate the full text of a document using its DOI text of the document, select the “link to full text” option at the top of the search box. You can find an article by DOI by searching from the Library's Find an Exact Article page. The search box there is configured to automatically. A DOI (Digital Object Identifier) is a unique identifier that identifies digital objects. Some of the online resources used to search for articles on topics will supply. If you have a citation for a book or article in hand and would like to know if a DOI has been associated with it, you can use the Metadata search.