Distefano, Joseph J Stubberud, Allen R Williams Ivan J <br/><br/>
Theory and Problema of Feedback and Control Systems 

 - Newyork  McGraw-Hill  1976 
 - p.371 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control Systems Terminology<br/>Signal Flow Graphs
<br/><br/><label>Dewey Class. No.: </label>629.8314 D614