To cite fmri in publications use:

Tabelow K, Polzehl J (2011). “Statistical Parametric Maps for Functional MRI Experiments in R: The Package fmri.” Journal of Statistical Software, 44(11), 1–21. https://www.jstatsoft.org/v44/i11/.

For the underlying structural adaptive smoothing method please cite:

Tabelow K, Polzehl J, Voss HU, Spokoiny V (2006). “Analyzing fMRI experiments with structural adaptive smoothing procedures.” NeuroImage, 33(1), 55–62. doi: 10.1016/j.neuroimage.2006.06.029.

For the underlying structural adaptive segmentation method please cite:

Polzehl J, Voss HU, Tabelow K (2010). “Structural adaptive segmentation for statistical parametric mapping.” NeuroImage, 52(2), 515–523. doi: 10.1016/j.neuroimage.2010.04.241.

Corresponding BibTeX entries:

  @Article{,
    title = {Statistical Parametric Maps for Functional MRI Experiments
      in {R}: The Package {fmri}},
    author = {Karsten Tabelow and J\"org Polzehl},
    journal = {Journal of Statistical Software},
    year = {2011},
    volume = {44},
    number = {11},
    pages = {1--21},
    url = {https://www.jstatsoft.org/v44/i11/},
  }

  @Article{,
    title = {Analyzing fMRI experiments with structural adaptive
      smoothing procedures},
    author = {Karsten Tabelow and J\"org Polzehl and Henning U. Voss
      and Vladimir Spokoiny},
    journal = {NeuroImage},
    year = {2006},
    volume = {33},
    number = {1},
    pages = {55--62},
    doi = {10.1016/j.neuroimage.2006.06.029},
  }

  @Article{,
    title = {Structural adaptive segmentation for statistical
      parametric mapping},
    author = {J\"org Polzehl and Henning U. Voss and Karsten Tabelow},
    journal = {NeuroImage},
    year = {2010},
    volume = {52},
    number = {2},
    pages = {515--523},
    doi = {10.1016/j.neuroimage.2010.04.241},
  }