Constructive approaches to mathematical models :  proceedings of a conference in honor of R.J. Duffin, Pittsburgh, Pennsylvania, 10-14 July 1978 / 
edited by C.V. Coffman and G.J. Fix 
 - New York :  Academic Press,  1979 
 - xviii, 458 p. :  il. ;  l 24 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>012178150X 
<br/><br/><label>LCCN: </label>79-51673 
<br/><br/><label>Subjects--Personal Names: </label><br/>Duffin, R. J. 1909- 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical models--Congresses