Biggs, Norman. <br/><br/>
Algebraic graph theory / 
Norman Biggs. 
 - Cambridge :  Cambridge University Press  1993. 
 - vi, 205 p. ; 
<br/><br/><label>ISBN: </label>0521458978 
<br/><br/><label>Subjects--Index Terms: </label>Graph theory /  Algebra 
<br/><br/><label>Universal Decimal Class. No.: </label>519.17  / BIG