Your link
http://www.firewirehr.host.sk/Zeljava-index2.html is not longer valid...
I admire your persistency in seeking such materials... but this forum, IMHO, will not provide the info you are looking for... The break-up of Yugoslavia had made very big scars... still not healed.
Unfortunately I have no info you don't already know, sorry...
PS. I read all you wrote on tanknet... congrats... a very nice job