Mathematics for computer scientists:  Number Theory, Modular Arithmetic, and Graph Theory/ 
Rankin S. A. 
 - 18th ed. 
 -  Kinson Publishing,  2012. 
 - 287 p.: 
<br/><br/> Includes index 
<br/><br/><label>LC Class. No.: </label>QA 76.9 .M35 2012