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"An Image-Based CAPTCHA Scheme Exploiting Human Appearance Characteristics."
Sajida Kalsoom, Sheikh Ziauddin, Abdul Rehman Abbasi (2012)
- Sajida Kalsoom, Sheikh Ziauddin, Abdul Rehman Abbasi:
An Image-Based CAPTCHA Scheme Exploiting Human Appearance Characteristics. KSII Trans. Internet Inf. Syst. 6(2): 734-750 (2012)
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