Maz'ya, V <br/><br/>
Approximate approximations 
V. Maz'ya 
 - Providence  American Mathematical Society  2007 
 - xiv  349 
 - Mathematical surveys & monographs 141 .
<br/><br/><label>ISBN: </label>9780821842034 
<br/><br/><label>Dewey Class. No.: </label>511.4  / MAZ