Arnold, Vladimir I. <br/><br/>
Geometrical methods in the theory of ordinary differential equations  
V.I. Arnold ; translated by Joseph Szucs ; English translation edited by Mark Levi 
 - New York :  Springer-Verlag,  c1983 
 - x, 334 p.   ill.   25 cm 
 - Grundlehren der mathematischen Wissenschaften ;  vol. 250 .
<br/><br/> Exemple de probleme p. 332 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0387906819 
<br/><br/><label>LCCN: </label>82005464  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations<br/>Ecuatii diferentiale
<br/><br/><label>LC Class. No.: </label>QA372 
<br/><br/><label>Dewey Class. No.: </label>515.352