Yandulskyi, O.S., Tymokhin, O.V., Trunina, H.O. and Nesterko, A.B. 2016. COHERENT GENERATOR GROUP ESTIMATION DURING ELECTROMECHANICAL TRANSIENTS IN POWER SYSTEMS. Visnyk of Vinnytsia Politechnical Institute. 6 (Feb. 2016), 129–135.