00305nam a2200133Ia 4500003000400000005001700004008004100021020001800062040001000080100002600090245003800116260000800154260000900162OSt20240102050151.0170524s9999    xx            000 0 und d  a9780070665842  cIIMTU  aStevenson- William D. 0aElements of Power System Analysis  bMGH  c1982