Arnold, V.I. <br/><br/>
Geometrical methods in the theory of ordinary differential equations. ed.2 
V.I. Arnold 
 - Berlin  Springer- Verlag  1988 
 - xii, 351p. 
<br/><br/><label>Subjects--Index Terms: </label>Ordinary differential equations 
<br/><br/><label>Universal Decimal Class. No.: </label>517.91  / ARN