A publication in any medium issued in successive parts bearing numerical or chronological designations and intended to continue indefinitely, such as a magazine, scholarly journal, or newspaper.\n\nSee also [blog post](https://blog.schema.org/2014/09/02/schema-org-support-for-bibliographic-relations
Every entity minted by the Global Data Registry that uses Periodical in its schema implementation appends here — with its internal entity page link and its live source URL. Growing with every minting pass.