@misc{indiciae35e22a03906f,
  title = {Stratified partial likelihood estimation.},
  author = {G Ridder and I Tunali},
  year = {1999},
  doi = {10.1016/s0304-4076(98)00090-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/12322577/},
  note = {Source identifier: 12322577}
}