“…In the literature, different terms are used to describe procedures where patrons' requests are sent to the document supplier who will then send the items directly to the users or to the libraries: SUMO (Sellers and Beam, 1995;Rutstein, 1998;DeSart and Miller, 1998;Robertson, 1998), Unmediated Document Delivery (Orr and Dennis, 1996;Kochan and Elsweiler, 1998;Anthes, 1999;Crowley, 1999), Patron Initiated Interlibrary Loan (Fender, 1995), Non-Mediated Document Delivery (Walters, 1995), User Initiated Interlibrary Loan (Arkin, 1998), Outsourcing Document Supply (Broadmeadow, 1997), End-User Document Delivery (Walters, 1996), End-User Document Supply (Chambers, 1999), End-User Document Access (Oliver, 1996), Do-it-yourself Document Delivery (Thornton and Jackson, 1997).…”