And here is your agenda. You as Bosnian, don't want to hear that Slavic language and culture was not indigenous to Balkan. Tell us where Slavs were hiding in Balkans during Greek and Roman Empires if their historians, travelers and governors didn't even mention such group or describe slavic language being in Balkans. Where they blind for many long centuries?!!! On contrary, Slavs are mentioned first time during 5th century when they are starting to attack Byzantium. There is also archeological evidence of new culture entering Balkans at the same time.
It is still vieviurka in Polish. As for the Russian - languages evolve, you know.