To cite pcIRT in publications use:

Christine Hohensinn (2018). pcIRT: An R Package for Polytomous and Continuous Rasch Models. Journal of Statistical Software, Code Snippets, 84(2), 1-14.<doi:10.18637/jss.v084.c02>

Corresponding BibTeX entry:

  @Article{,
    title = {{pcIRT}: An {R} Package for Polytomous and Continuous
      Rasch Models},
    author = {Christine Hohensinn},
    journal = {Journal of Statistical Software, Code Snippets},
    year = {2018},
    volume = {84},
    number = {2},
    pages = {1--14},
    doi = {10.18637/jss.v084.c02},
  }