@misc{indiciaeae2ead7df0bb,
  title = {A one-sided interim analysis with binary outcomes.},
  author = {D R Bristol},
  year = {1988},
  doi = {10.1016/0197-2456(88)90061-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3053042/},
  note = {Source identifier: 3053042}
}