Andersen, Lars Dovling., ed. [et al]. <br/><br/>
Graph theory in memory of GA Dirac   
ed. by Lars Dovling Andersen [et al] 
 - Amsterdam  North-Holland  1989 
 - x, 517p. 
 - Annals of discrete mathematics  V.41 .
<br/><br/><label>ISBN: </label>0444871292 
<br/><br/><label>Dewey Class. No.: </label>511.5  / N893