Okuyama, Yasuo <br/><br/>
Absolute summability of fourier series and orthogonal series 

 - Berlin  Springer-Verlag  1984 
 - vi,120p.  PB  22cm. 
 - Lecture notes in mathematics .
<br/><br/> includes references 
<br/><br/><label>ISBN: </label>9783540133551 
<br/><br/><label>Dewey Class. No.: </label>515.2433  / OKU