@misc{indiciaeb6cb99538a1e,
  title = {On maximum likelihood solutions for exponential survival models.},
  author = {G J Beck and C L Chiang},
  year = {1981},
  doi = {10.1002/bimj.4710230505},
  url = {https://pubmed.ncbi.nlm.nih.gov/12312229/},
  note = {Source identifier: 12312229}
}