Maliha Nazir <br/><br/>
Semi automatic captcha security evaluation toolkit  English 
Maliha Nazir 
 - Islamabad  NUST School of Electrical Engineering and Computer Science  2011 
 - 30p.  ;ill.  :27cm. +  CD-ROM 
<br/><br/> Supervisors: Dr. Syed Ali Khayam, Dr. M. Murtaza Khan 
<br/><br/><label>Dewey Class. No.: </label>BICSE-5