@misc{indiciaeebc870d9d04a,
  title = {Closed sequential design for preference test at one-tailed 0.05 level.},
  author = {A Sakuma},
  year = {1968},
  doi = {10.1254/jjp.18.276},
  url = {https://pubmed.ncbi.nlm.nih.gov/5303529/},
  note = {Source identifier: 5303529}
}