Yes, I eventually found my way there too, while I was trying to figure out how to subscribe. You're right, it looks as though there's some valuable material on the site and it would be a shame if it all simply vanished into the ether. I've contacted them to see if they'd be interested in selling me the pgn files to the three-part article you kindly tracked down for me, so we'll see what happens about that.

an ordinary chessplayer wrote on 04/25/19 at 03:42:00:

Thanks very much for this. Yes, that line is indeed the one I was looking for. I'd tried clicking the 'Subscribe' and 'Register' links below the article and got 'Page not found' in both cases, and I assumed – clearly incorrectly – that the articles as presented were complete.

Thank you so much for tracking these down for me. Your resourcefulness with search tools is clearly far greater than mine! Oddly enough, the specific line that Lokander refers to in his book isn't mentioned in any of these articles, so it seems Zvjaginsev must have written prolifically on this variation and there must be even more material lurking out there somewhere. I hadn't realised this was the case. Nevertheless, the links you've found for me contain a number of interesting ideas I hadn't come across before and are certainly going to be of great use. Thanks again for your help.

In The Open Games With Black, by Martin Lokander, the author refers to an opening article by GM Vadim Zvjaginsev discussing the line 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Na5 6.Bb5+ c6 7.dxc6 bxc6 8.Bd3. Lokander doesn't specify where the article appears, nor is this immediately apparent from the bibliography. Does anybody know where Zvjaginsev's article can be found? Thanks in advance.