Perko, Lawrence <br/><br/>
Differential equations and dynamical systems. 
Lawrence  Perko 
 - New York  Springer-Verlag  1991 
 - xii, 403p.  ill. ; 
<br/><br/><label>Subjects--Index Terms: </label>Differential equations and dynamical systems. 
<br/><br/><label>Universal Decimal Class. No.: </label>517.9  / PER