If you use lgpr, please cite the article below.

Juho Timonen, Henrik Mannerström, Aki Vehtari and Harri Lähdesmäki. lgpr: an interpretable non-parametric method for inferring covariate effects from longitudinal data, Bioinformatics, Volume 37, Issue 13, 1 July 2021, Pages 1860-1867, https://doi.org/10.1093/bioinformatics/btab021

Corresponding BibTeX entry:

  @Article{,
    title = {lgpr: an interpretable non-parametric method for inferring
      covariate effects from longitudinal data},
    author = {Juho Timonen and Henrik Mannerström and Aki Vehtari and
      Harri Lähdesmäki},
    journal = {Bioinformatics},
    volume = {37},
    number = {13},
    pages = {1860--1867},
    year = {2021},
    url = {https://doi.org/10.1093/bioinformatics/btab021},
  }