Main principles and methods of the complex optimisation of operation control of interconnected power systems (IPS) on the interstate level in free market conditionsKrumm, Lembit; Kurrel, Ü.; Terno, Olaf5th International Conference on Optimal Research "Simulation and Optimization in Business and Industry" : May 17-20, 2006, Tallinn, Estonia : programme and abstracts2006 / p. 33-34 Main principles and methods of the complex optimisation of operation control of interconnected power systems (IPS) on the interstate level in free market conditionsKrumm, Lembit; Kurrel, Ü.; Terno, OlafInternational Conference on Operational Research : Simulation and Optimisation in Business and Industry : May 17-20, 2006, Tallinn, Estonia2006 / p. 183-188