This paper is my best lead so far, but it’s behind a paywall at the moment. I think it’s in “Bayerthal (1911)”, whatever that turns out to be.
Bayerthal (1911) is unfortunately in German. Now I’m waiting for access to this paper.
Got it. But see here in any case.
This paper is my best lead so far, but it’s behind a paywall at the moment. I think it’s in “Bayerthal (1911)”, whatever that turns out to be.
Bayerthal (1911) is unfortunately in German. Now I’m waiting for access to this paper.
Got it. But see here in any case.