Hinch, E.J. <br/><br/>
Perturbation methods 

 - Cambridge  Cambridge university press  1995 
 - xii,160p.  22cm. PB. 
 - Cambridge texts in applied mathematics .
<br/><br/><label>ISBN: </label>0521378974 
<br/><br/><label>Dewey Class. No.: </label>515.35  / HIN