Thanks Twit, found it now. I had actually tried the singular version without success because, like one, I never googled the foreign title (until just now).
Nice difficulty, by which I mean it was bloody frustrating at times, and artful construction. A couple of very trick clues, at least to me. Apposite. Thanks, Charybdis.
What a great puzzle! For me, a perfect combination of challenge and accessibility, artful clues, fully worked-out subject and a pleasing graphic to finish with.