@article{ExistenceGLM,
  Author = {Correia, Sergio and Guimar{\~a}es, Paulo and Zylkin, Thomas},
  Title = {Verifying the existence of maximum likelihood estimates for generalized linear models},
  Year = {2021},
  eprint = {arXiv:1903.01633},
  journal={arXiv preprint arXiv:1903.01633}
}

@article{ppmlhdfe,
  Author = {Correia, Sergio and Guimar{\~a}es, Paulo and Zylkin, Thomas},
  Title ={{Fast Poisson estimation with high-dimensional fixed effects}},
  Journal = {The Stata Journal},
  Volume = {20},
  Number = {1},
  Pages = {95-115},
  Year = {2020},
  DOI = {10.1177/1536867X20909691},
  URL = {https://doi.org/10.1177/1536867X20909691},
  eprint = {https://doi.org/10.1177/1536867X20909691}
}