1. System security: the computer's role;Dy Liacco;IEEE Spectrum,1978
2. Numerical testing of power system load-flow equivalencing;Deckmann;IEEE Trans. Power Appar. & Syst.,1980
3. Studies on power system load-flow equivalencing;Deckmann;IEEE Trans. Power Appar. & Syst.,1980
4. Reduction in power systems;Alvarado,1977
5. External system static equivalent for on-line implementation;Elkonyaly,1978