[1]
M. V. Ivanović, D. P. Popović, and S. Minić, “Primary, Secondary and Tertiary Frequency Control in Dynamic Security Analyses of Electric Power Interconnections”, Zb EI Nikola Tesla, vol. 22, no. 22, pp. 93–115, Nov. 2012, doi: 10.5937/zeint22-2521.