Bell, D.J & Jacobson, D.H <br/><br/>
Singular optimal control problems 
D.J. Bell & D.H. Jacobson 
 - London  Academic Press  1975 
 - xi  190 
 - Mathematics in science & engineering 117 .
<br/><br/><label>ISBN: </label>0120850605 
<br/><br/><label>Dewey Class. No.: </label>15.04  / BELL