Informational services, namely providing links to publishers of scholarly articles and research materials that allows publishers, libraries, researchers and others to ascertain and verify that the document in which the link is embedded is a copy of that document that is maintained by the original publisher of the scholarly work or by a legitimate successor to or licensee of the original publisher; Providing research relating to scholarly works, specifically, aiding others in ascertaining and verifying whether a published work is a copy maintained by the original publisher or by a legitimate successor to or licensee of the original publisher