Lenie P. Nieves and Ankathereen F. Santos.  4  0   <br/><br/>
An enhancement of CAPTCHA algorithm used in protecting website registration /        6 
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Lenie P. Nieves and Ankathereen F. Santos. 
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<br/><br/>   Undergraduate Thesis: (BS in Computer Studies major in Computer Science) - Pamantasan ng Lungsod ng Maynila, 2012. 
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