Hardy,  Darel W. <br/><br/>
Applied algebra  : codes, ciphers, and discrete algorithms / 

 - 2nd 
 - Boca Raton:  CRC Press,  2009 
 - 410p. Bibl. Index 
 - Discrete Mathematics and its applications .
<br/><br/><label>ISBN: </label>9781420071429 
<br/><br/><label>Dewey Class. No.: </label>512  / H269.AA