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"A new two-level QR code with visual cryptography scheme."
Yuqiao Cheng et al. (2018)
- Yuqiao Cheng
, Zhengxin Fu, Bin Yu, Gang Shen:
A new two-level QR code with visual cryptography scheme. Multim. Tools Appl. 77(16): 20629-20649 (2018)

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