Journal articles are frequently cited with just the DOI (Document Object Identifier) as a link. This would normally take you to the copy held on the publisher's site. As a member of an institution, you may have access to the article elsewhere. Your Institution's OpenURL Resolver can tell you where, if we can get it to resolve the link for you. Setting a cookie asking the DOI site to do the redirecting for you is a simple way of achieving this.
Test this button and the following link.