@misc{indiciae21e8a1f758d3,
  title = {Some optimal and non-optimal two-stage designs using an alpha-spending function.},
  author = {H I Patel},
  year = {1996},
  doi = {10.1002/(sici)1097-0258(19960830)15:16<1739::aid-sim341>3.0.co;2-t},
  url = {https://pubmed.ncbi.nlm.nih.gov/8870156/},
  note = {Source identifier: 8870156}
}