Sen, Ashish K. <br/><br/>
Gravity models of spatial interaction behavior / 
Ashish Sen, Tony E. Smith. 
 - Berlin ;  New York :  Springer-Verlag,  c1995. 
 - xv, 572 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p. [538]-554) and indexes. 
<br/><br/><label>ISBN: </label>3540600264 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transportation--Mathematical models.<br/>Space in economics--Mathematical models.
<br/><br/><label>Dewey Class. No.: </label>388.015  / SEG 1995