Butzer, P L, ed <br/><br/>
Linear spaces and approximation: proceeding of the conference held at the oberwolfach mathematical reserach institute, black forest August 20-27, 1977 

 - Oberwolfach  Brikhauser Verlag Basel  1978 
 - 685 p. 
<br/><br/><label>Dewey Class. No.: </label>515.624 B985L