To cite package ‘fastFMM’ in publications use:

  Cui E, Loewinger G, Xin A (2026). _fastFMM: Fast Functional Mixed
  Models using Fast Univariate Inference_. R package version
  1.0.1.9000, <https://github.com/awqx/fastfmm>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {fastFMM: Fast Functional Mixed Models using Fast Univariate Inference},
    author = {Erjia Cui and Gabriel Loewinger and Al Xin},
    year = {2026},
    note = {R package version 1.0.1.9000},
    url = {https://github.com/awqx/fastfmm},
  }