Agrachev, Andrei A and et al <br/><br/>
Nonlinear and optimal control theory   
by Andrei A Agrachev and et al 
 - Berlin  Springer  2008 
 - xiii, 351p 
 - Lecture Notes in Mathematics  1932 .
<br/><br/> Lectures given at the C.I.M.E. summer school 
<br/><br/><label>ISBN: </label>9783540776444 
<br/><br/><label>Dewey Class. No.: </label>515.642  / P081