Eastern European Cuisine In Chicago
The listings at Metromix categorize 2 Serbian, 0 Bosnian, 8 Ukrainian, 0 Georgian, and 3 Croatian restaurants. But those categorizations are not always precise, as many restaurants overlap more than one nationality, and they come up under multiple nationalities when searching. For example, the 8 places listed under "Ukrainian" include 3 primarily Russian restaurants, one Lithuanian, and also Tbilisi, which bills itself as "Chicago's only Georgian restaurant". In any case, their listings would be a good place to start.
http://chicago.metromix.com/restaurants (click on "View all cuisines")
7919 Ogden Ave, Lyons
Serbian cuisine, but of course, because of similarities, offers many similar Croatian and Bosnian delicacies. I personally have had the grilled meat platter with a great side salad. The salad was layers of tomatoes (fresh and sweet), onions, cucumbers and shredded feta cheese.