Bush, Alan W. <br/><br/>
Pertubation methods for engineers and scientists / 
Alan W. Bush. 
 - Boca Raton, Fla. :  CRC Press,  1992. 
 - xii, 303 p. 
<br/><br/><label>ISBN: </label>084938608X 
<br/><br/><label>LCCN: </label>92065087     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pertubation (Mathematics).