@misc{indiciae7305835000d1,
  title = {Estimation in flexible two stage designs.},
  author = {Werner Brannath and Franz König and Peter Bauer},
  year = {2006},
  doi = {10.1002/sim.2258},
  url = {https://pubmed.ncbi.nlm.nih.gov/16220489/},
  note = {Source identifier: 16220489}
}