BELGRADE (Serbia), September 17 (SeeNews) – Serbia invited co-investors in a 236 million euro ($338 million) tourist complex in Stara Planina mountain to file bids until November 7, the Economy Ministry said on Wednesday. Co-investors will finance the construction of all the buildings in Jabucko Ravniste in eastern Serbia, the ministry told SeeNews in a statement. The ownership of the buildings will be shared by the state and the co-investor.