Russell, Stuart J. <br/><br/>
Artificial intelligence :a modern approach / 
Stuart J. Russell and Peter Norvig ; contributing writers, Ernest Davis ... [et al.]. 
 - 3rd ed. 
 - Upper Saddle River :  Prentice Hall,  2010. 
 - xviii, 1132 p. :  ill. ;  26 cm. 
 - Prentice Hall series in artificial intelligence .