Willems Jan C <br/><br/>
Analysis of feedback systems 
Willems Jan C 
 - Cambridge  MIT Press           1971 
 - xv188p.  cm. 
 - Massachusetts Institute of Technology, Research Monograph.62 .
<br/><br/> Bibliography at the end of each chapter 
<br/><br/><label>ISBN: </label>0 262 23046 1 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B2893, L1