Altomare, Francesco <br/><br/>
Korovkin- type approximation theory and its applications 
Francesco Altomare 
 - Berlin  Walter de Gruyter  1994 
 - xi, 627p 
 - de Gruyter studies in mathematics  17 .
<br/><br/><label>Subjects--Index Terms: </label>Approximation theory 
<br/><br/><label>Universal Decimal Class. No.: </label>517.988.8  / ALT