Thanks to my colleague, Saša France, I had the opportunity to read a great article: Jugoslawien: Die Senta Ausgabe
1944, Echtes und Gefälschtes by Prof. Dr. Jovan Velićković. I learned a lot of
new and useful stuff for the next version of my Senta document.
BTW: I cannot read German so I had to use some processing before I could understand the content: first scanning, than OCR processing and finally the automatic translation. After five minutes of work, I got a result that was good enough that I was able to read the article.