1、Modeling the regional electricity network in Southeast Europe      
     Koritanov, V.S.; Veselka, T.D.;
     Power Engineering Society General Meeting, 2003, IEEE Volume: 1


2、Large-scale wind power integration and voltage stability limits in regional networks
      Palsson, M.P.; Toftevaag, T.; Uhlen, K.; Tande, J.O.G.;
      Power Engineering Society Summer Meeting, 2002 IEEE Volume: 2