To cite dfphase1 in publications use:

Giovanna Capizzi, Guido Masarotto (2018). Phase I Distribution-Free Analysis with the R Package dfphase1. in Frontiers in Statistical Quality Control 12, eds: Sven Knoth and Wolfgang Schmid.<doi:10.1007/978-3-319-75295-2_1>

Corresponding BibTeX entry:

  @InCollection{,
    title = {Phase I Distribution-Free Analysis with the {R} Package
      {dfphase1}},
    author = {Giovanna Capizzi and Guido Masarotto},
    booktitle = {Frontiers in Statistical Quality Control 12},
    year = {2018},
    editor = {{Knoth} and {Sven} and {Schmid} and {Wolfgang}},
    publisher = {Springer},
    pages = {3--19},
    doi = {10.1007/978-3-319-75295-2_1},
  }