Dumortier, Freddy. <br/><br/>
Qualitative theory of planar differential systems  [Book] / 
Freddy Dumortier, Jaume Llibre, Joan C. Artš. 
 - Berlin ;  New York :  Springer,  c2006. 
 - xvi, 298 p. :  ill. ;  24 cm. 
 - Universitext .
<br/><br/> All. 
<br/><br/><label>ISBN: </label>3540328939 (pbk.) 9783540328933 (pbk.) 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>978516974  GyFmDB 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations--Qualitative theory.<br/>Differential equations--Numerical solutions.
<br/><br/><label>Dewey Class. No.: </label>515.35