Cvetkovic, D. <br/><br/>
Eigenspaces of graphs 

 - Cambridge  Cambridge University Press  1997 
 - xii,258p.  23 cm. 
 - Encyclopedia of mathematics and its applications .
<br/><br/><label>ISBN: </label>0521573521 
<br/><br/><label>Dewey Class. No.: </label>511.5  / CVE