Bender, Carl M. and Ozag,Steven A.  <br/><br/>
Advanced Mathematical methods for Scientists and Enginee  : asymptotic methods and perturbation theory 
Bender, Carl M. and Ozag,Steven A.  
 -   Springer  1999 
<br/><br/><label>Dewey Class. No.: </label>515.35  / N99 BEN.O