00977nam0-22003131i-450-9900010233904033213-540-08430-4000102339FED01000102339(Aleph)000102339FED0100010233920000920d1977----km-y0itay50------baengEnergy Methods in Time-Varying System Stability and Instability AnalysesY.V. VenkateshBerlin [etc.]Springer-Verlag1977ix, 256 p.24 cmLecture notes in physics68Equazioni differenziali e integroDifferenziali517.37Venkatesh,Y.V.335047ITUNINARICAUNIMARCBK99000102339040332115-137.00110599FI115-13710835FI1FI1Energy Methods in Time-Varying System Stability and Instability Analyses118507UNINAING01