Shlama Akhi Zoran,
Welcome to the forum.
I do happen to have a Slovenian friend who is also from Belgrade. I
could perhaps put you in touch with him. He gave me a Slovenian Bible
several years ago, however, I don't speak or read Slovenian, but I
would be more than willing to assist in some way.
Do you read Aramaic? If so, you could go through the text of the
Aramaic text making notes as to the differences between it and the
Slovenian, making corrections along the way. That would be one
option. The other would be to translate from Aramaic to Slovenian and
you would have a new translation.
Shlama,
Ya'aqub Younan-Levine
http://pshitta.org/