To cite package ‘expandFunctions’ in publications use:

Miller S (2016). expandFunctions: Feature Matrix Builder. R package version 0.1.0, https://CRAN.R-project.org/package=expandFunctions.

Corresponding BibTeX entry:

  @Manual{,
    title = {expandFunctions: Feature Matrix Builder},
    author = {Scott Miller},
    year = {2016},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=expandFunctions},
  }