Bang-Jensen, Jorgen. <br/><br/>
Digraphs :  theory, algorithms and applications / 
Jorgen Bang-Jensen, Gregory Gutin. 
 - Corrected. 
 - [S.l.] :  Springer,  2002. 
 - 754 p. ;  24 cm. 
<br/><br/><label>ISBN: </label>1852332689 9781852332686 
<br/><br/><label>Dewey Class. No.: </label>511.5