Ajay Kumar <br/><br/>
Encyclopaedia of computer software technology 
Ajay Kumar 
 - New Delhi  New Delhi, Anmol  2003 
 - 954p 
 -  1-3 .
<br/><br/><label>ISBN: </label>81-261-1385-5 
<br/><br/><label>Source: </label>Textbook