Source Publication (e.g., journal title)
The Dialog version of ISTA was part of Dialog's full-text linking program, and ISTA indexers include URLs in ISTA records when they have them. ISTA's Donald Hawkins explains that "many users don't have accounts with Dialog. ITI cannot offer One-stop shopping.' EBSCO, on the other hand, has a wealth of resources and a large complement of databases...[including] a large collection of full text, which it hosts and has rights to."
Tenopir, Carol, "Database for Information Professionals" (2003). School of Information Sciences -- Faculty Publications and Other Works.