To cite metagam in publications use:

Sørensen Ø, Brandmaier AM, Macià D, Ebmeier K, Ghisletta P, Kievit RA, Mowinckel AM, Walhovd KB, Westerhausen R, Fjell A (2021). “Meta-analysis of generalized additive models in neuroimaging studies.” NeuroImage, 224, 117416. doi: 10.1016/j.neuroimage.2020.117416, https://doi.org/10.1016/j.neuroimage.2020.117416.

Corresponding BibTeX entry:

  @Article{,
    title = {Meta-analysis of generalized additive models in
      neuroimaging studies},
    author = {{\O}ystein S{\o}rensen and Andreas M. Brandmaier and
      D{\'{\i}}dac Maci{\`{a}} and Klaus Ebmeier and Paolo Ghisletta
      and Rogier A. Kievit and Athanasia M. Mowinckel and Kristine B.
      Walhovd and Rene Westerhausen and Anders Fjell},
    journal = {NeuroImage},
    year = {2021},
    volume = {224},
    pages = {117416},
    doi = {10.1016/j.neuroimage.2020.117416},
    url = {https://doi.org/10.1016/j.neuroimage.2020.117416},
  }