Journal of approximation theory. 

 - New York :  Academic Press,  1968 
 - v. :  ill. ;  23 cm. 
 - Monthly 
 - v. 1- June 1968- 
<br/><br/><br/>Articles in English or German. 
<br/><br/><label>ISSN: </label>0021-9045 
 = Journal of approximation theory 
 = J. approx. theory 
<br/><br/><label>CODEN: </label>JAXTAZ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Approximation theory--Periodicals.