Pontriagin, L. S.   (Lev Semenovich) 

 - Berlin ; $a New York :  Springer-Verlag,  1984. 
 - viii, 304 p. :  ill.  25 cm. 
<br/><br/><label>ISBN: </label>3540123512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical analysis
<br/><br/><label>LC Class. No.: </label>QA556