Lectures on the geometry of numbers 
Siegel, Carl Ludwig, 
 - Berlin ; | New York :  Springer-Verlag,  1989 
 - x, 160 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>387506292 (U.S. : alk. paper)