About Persistent URLs
Persistent URLs (also called PURLs, stable URLs, persistent links, or durable links) are internet addresses that remain constant. They are provided by many library online databases for consistent access to individual full-text articles when links are needed, e.g., in course management systems such as Brightspace.
Because most of these are paid-for subscription databases with licensing agreements, and are not freely available on the web, proper linking using these persistent URLs is required.