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"A User-friendly Image-Text Fusion CAPTCHA for Secure Web Services."
Yeonchan Ahn, Namsoo Kim, Yoo-Sung Kim (2013)
- Yeonchan Ahn, Namsoo Kim, Yoo-Sung Kim:
A User-friendly Image-Text Fusion CAPTCHA for Secure Web Services. iiWAS 2013: 550
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