https://en.m.wikipedia.org/wiki/Etruscan_civilization
(2) Again, even according to Wikipedia: "Rascians (Latin: Rasciani, Natio Rasciana; Serbian: Рашани / Rašani) was a common exonym for Serbs during the late medieval and the early modern period. It was used most frequently in the Kingdom of Hungary, and also in the Habsburg Monarchy. The term was derived from the Latinized name for the central Serbian region of Raška (Latin: Rascia; Serbian Cyrillic: Рашка). In medieval and early modern Western sources, exonym Rascia was often used as a designation for Serbian lands in general, and consequently the term Rasciani became one of the most common designations for Serbs.(...)"
https://en.m.wikipedia.org/wiki/Rascians
(3) During WWII, Svetislav Bilbija was a secretary to an episkop of the Serbian Orthodox Church (equivalent to a bishop in RCC) in Italy where he has cracked the code of Etruscan because he had noticed the similarity of Etruscan letters and modern serbian cyrillic.
Ofcouse, connecting a culture that is precursor to the Roman culture (to which the modern West sees itself as a successor) with some (now) small peoples from the Balkans, peoples that have been put on a shame pole for the last 30 years, the Serbs - that is a big no, no. Which is why you'll find people who smear the work of Bilbija. But, some have a different opinion. For example, people at the Rand Corporation (yes, that US military contractor), or at least those on their mailing list:
“In a brillant piece of work rivalling that of Michael Ventris, Bilbija has deciphered the Etruscan Mummy Book.”
http://ixoloxi.com/voynich/etruscan.txt
They refer to this book (which has a direct connection to The Mummy of Zagreb):
https://books.google.ba/books/about/The_Mummy_of_Zagreb_and_...