@misc{indiciae9c9d92dd4520,
  title = {Self-focusing hidden bar code.},
  author = {Zhiqiang Zhong and Jianping Ding and Zhou Jin and Peiying Liang and Gao Wenqi},
  year = {2002},
  doi = {10.1364/ao.41.000308},
  url = {https://pubmed.ncbi.nlm.nih.gov/11899269/},
  note = {Source identifier: 11899269}
}