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

 - Cambridge :  CUP,  1991. 
 - xi, 160 p. 
<br/><br/><label>ISBN: </label>0521378974 :  KES 2,998.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Perturbation (Mathematics)
<br/><br/><label>LC Class. No.: </label>QA871  / .H56