00300nam a2200121Ia 4500082002000000100001800020245002900038260002700067300001300094490006100107500000500168700000500173  a519.93bEl41.CS  aElgerd, O. I.  aControl systems theoryb  aTokyobKogakushac1967  ax, 562p.  aMcGraw-Hill Electrical and Electronic Engineering series  a  a