Ding, Tong-Ren. <br/><br/>
Approaches to the qualitative theory of ordinary differential equations :  dynamical systems and nonlinear oscillations / 
Ding Tongren 
 - New Jersey :  World Scientific,  c2007 
 - ix, 383 p. :  ill. ;  24 cm. 
 - Peking University series in mathematics ;  v. 3 .
 - Peking University series in mathematics ;  v. 3 .
<br/><br/>Includes bibliographical references (p. 377-383) 
<br/><br/> Advanced undergraduate and graduate students 
<br/><br/><label>ISBN: </label>9789812704689 981270468X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Nonlinear--Textbooks<br/>Nonlinear oscillations--Textbooks.