It would be helpful if research papers included the publication date prominently displayed in the header/abstract of the paper -- but none of them do. You can g

It would be helpful if research papers included the publication date prominently displayed in the header/abstract of the paper -- but none of them do. You can get a idea by looking what the paper itself references in the endnotes, but that varies. It would be a useful search-engine feature or plugin to derive the pub-date information (and possibly the source journal(s), if appropriate) from meta-data elsewhere and/or by cross-referencing the papers that cite each other and include dates. It's also very annoying that one can usually find a free version of most papers, but I need to wade through gobs of hits first where they want me to pay for it -- and it's not always obvious w/o following each link.