00269nam a22001097a 4500020001500000082001500015100001800030245003800048260003500086300001100121650002700132  a8174090592  a621.31 VAD  aS. S. Vadhera  aPower system analysis & stabiligy  aDelhibKhanna Publishersc2013  a1006p.  aElectric power systems