Ahlberg, J.H, et al <br/><br/>
Theory of splines & their applications 
J.H. Ahlberg, et al 
 - New York  Academic Press  1967 
 - xi  284 
 - Mathematics in science & engineering 38 .
<br/><br/><label>ISBN: </label>0120447509 
<br/><br/><label>Dewey Class. No.: </label>11.09  / AHLB