@misc{indiciae5aba0ba18d86,
  title = {a-Stratified CAT design with content blocking.},
  author = {Qing Yi and Hua-Hua Chang},
  year = {2003},
  doi = {10.1348/000711003770480084},
  url = {https://pubmed.ncbi.nlm.nih.gov/14633340/},
  note = {Source identifier: 14633340}
}