The article is covering mostly the Tupolev's KM-1 a.k.a ANT-22, which was actually built and flew quite successfully.
Also there is some info about a project of torpedo bomber designed by Grigorovich and a heavy maritime bomber designed by Bartini.
This is a comparison of the three: http://topwar.ru/uploads/posts/2013-06/1370540630_02.jpg
Here's the article: http://topwar.ru/29127-chernomorskiy-gigant.html
And here's its English translation made with Google translator (hence the weird terms and sentences). Let me know if you have difficulties understanding it, I might be able to clarify some things.
Enjoy!
