To cite glmGamPoi in publications use:

  Constantin Ahlmann-Eltze and Wolfgang Huber (2020); glmGamPoi:
  Fitting Gamma-Poisson Generalized Linear Models on Single Cell Count
  Data. Bioinformatics

A BibTeX entry for LaTeX users is

  @Article{,
    title = {glmGamPoi: Fitting Gamma-Poisson Generalized Linear Models on Single Cell Count Data},
    author = {Constantin Ahlmann-Eltze and Wolfgang Huber},
    journal = {Bioinformatics},
    year = {2020},
    url = {https://doi.org/10.1093/bioinformatics/btaa1009},
    doi = {10.1093/bioinformatics/btaa1009},
  }