Nayfeh, Ali Hasan <br/><br/>
Introduction to perturbation techniques 
Ali Hasan Nayfeh                                             
 - New York  John Wiley & Sons  1981 
 - xiv, 519p. 
<br/><br/><label>ISBN: </label>0-471-08033-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Differential Equations<br/>Mathematics<br/>Perturbation Techniques
<br/><br/><label>Universal Decimal Class. No.: </label>517.9  / NAY