Hagen, Roland. <br/><br/>
Spectral theory of approximation methods for convolution equations   
by Roland Hagen, Steffen Roch and Bernd Silbermann 
 - Basel  Birkhauser  1995 
 - xii, 373p. 
 - Operator theory advances and applications  V.74 .
<br/><br/><label>ISBN: </label>3764351128 
<br/><br/><label>Dewey Class. No.: </label>515.7222  / N95