Gumerov,Nail A <br/><br/>
Fast multipole methods for the Helmholtz equation in three dimensions 
Nail A Gumerov and Ramani Duraiswami  
 - Britain  Elsevier  2004 
 - xvi,520p. 
 - Volume in the Elsevier series in electromagnetism .
<br/><br/><label>Universal Decimal Class. No.: </label>517.958  / GUM