Finding a development land in Serbia is easier part of the job, trust me. Information about every plot is publicly available, and if you offer enough almost everything is for sale. Selling so far has always been like this:
1.You make a contact with investor, and make him interested-This is crucial
2.You go to the municipal government where investors wants to invest, and negotiate in investors behalf
3.Municipality office where they keep Land Owner Records, they give you info on desired plot, you go to owners home and ask people, in 90% of cases nobody is such an idiot to refuse to sell the land and get let's say 500 000 Euros, and average salary in Serbia is 400Euros, so I guess choice is pretty simple. They get 500 000 I get mine 3% - happy end.

Really it's that easy, couple people I know got rich just by mediating.
I repeat only brake there is lack of investors, and with crisis even got worse, but also has an upside, and that is land prices went down. I hoped that I could make some contacts here, but mostly I see here housing agents. So if you have some knowledge where I could find investors who are working with Emerging markets that would be hit in the center. I am open to all deals, even including revenue share, someone finds me and investor, and gets 1,5% why not, something is better than nothing
Yet again thanks everyone for constructive info.
Cheers