Malkevitch, J. <br/><br/>
Graphs,models and finite mathematics / 
J.Malkevitch 
 - Newjersey  Prentice- Hall  1974 
 - x,515 p. 
<br/><br/><label>Subjects--Index Terms: </label>Graph theory Mathematical models 
<br/><br/><label>Universal Decimal Class. No.: </label>519.17  / MAL