ah interesting - maybe yugotours shifted much work from inex adria due to their accident record? their last big one (accident) was the loss of their brand new MD81 in corsica 1981/82?
not all their fault - mainly bad luck on several -
although yugotours flights suffered 2 accidents
one with inex adria (mid-air with BEA Trident 3 going from SPU to Germany) and the aviogenex Krk crash from LGW I mentioned above.