Birkhoff, Garrett <br/><br/>
Ordinary differential equations 

 - Ed. 4 
 - Singapore  John Wiley  1989 
 - xi, 399p 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9-812-53002-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations -- Ordinary<br/>Mathematics<br/>Ordinary differential equations