Erdelyi, A. <br/><br/>
Asymptotic expansions   
by A.Erdelyi 
 - New York  Dover Publications  1956 
 - vi, 108p. 
<br/><br/><label>ISBN: </label>486603180 
<br/><br/><label>LCCN: </label>56-14043 
<br/><br/><label>Dewey Class. No.: </label>515.234  / N56;1