Ditzian, Zeev, <br/><br/>
Moduli of smoothness / 
Z. Ditzian, V. Totik. 
 - New York :  Springer-Verlag,  c1987. 
 - ix, 225 p. :  ill. ; 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>038796536X : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Smoothness of functions.<br/>Moduli theory.
<br/><br/><label>Universal Decimal Class. No.: </label>519.651  / DIT