Shapiro, H. S. <br/><br/>
Smoothing and approximation of functions   

 - New York  Van Nostrand  1969 
 - viii, 134p. 
 - Van Nostrand Reinhold Mathematical study .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>515.73  / Sh529.SA