Itkis, U <br/><br/>
Control systems of variable structure 

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 - New York  Wiley Eastern  1976 
 - x, 214p.   
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<br/><br/><label>ISBN: </label>
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<br/><br/><label>Subjects--Index Terms: </label>Control systems 
<br/><br/><label>Dewey Class. No.: </label>621-5