To cite structSSI in publications use:

Sankaran K, Holmes S (2014). “structSSI: Simultaneous and Selective Inference for Grouped or Hierarchically Structured Data.” Journal of Statistical Software, 59(13), 1–21. doi:10.18637/jss.v059.i13. https://www.jstatsoft.org/v59/i13/.

Corresponding BibTeX entry:

  @Article{,
    title = {{structSSI}: Simultaneous and Selective Inference for
      Grouped or Hierarchically Structured Data},
    author = {Kris Sankaran and Susan Holmes},
    journal = {Journal of Statistical Software},
    year = {2014},
    volume = {59},
    number = {13},
    pages = {1--21},
    url = {https://www.jstatsoft.org/v59/i13/},
    doi = {10.18637/jss.v059.i13},
  }