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"A Spelling Based CAPTCHA System by Using Click."
Kuo-Feng Hwang, Cian-Cih Huang, Geeng-Neng You (2012)
- Kuo-Feng Hwang, Cian-Cih Huang, Geeng-Neng You:
A Spelling Based CAPTCHA System by Using Click. ISBAST 2012: 1-8
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