Hardt, R., et al (eds) <br/><br/>
Six themes on variation 
Ed by R. Hardt, et al 
 - Providence  American Mathematical Society  2004 
 - ix  153 
 - STML 26 .
<br/><br/><label>ISBN: </label>9780821837207 
<br/><br/><label>Dewey Class. No.: </label>4.13  / HARD