To cite eirm in your publications, use:

Bulut, O. (2021). eirm: Explanatory item response modeling for dichotomous and polytomous item responses R package version 0.3.0. URL: https://CRAN.R-project.org/package=eirm.

Bulut, O., Gorgun, G., & Yildirim-Erbasli, S. N. (2021). Estimating explanatory extensions of dichotomous and polytomous Rasch models: The eirm package in R. Psych, 3(3), 308-321.<doi:10.3390/psych3030023>

Stanke, L., & Bulut, O. (2019). Explanatory item response models for polytomous item responses. International Journal of Assessment Tools in Education, 6(2), 259–278.<doi:10.21449/ijate.515085>

Corresponding BibTeX entries:

  @Manual{,
    title = {{eirm}: Explanatory item response modeling for dichotomous
      and polytomous item responses},
    author = {Okan Bulut},
    year = {2021},
    doi = {10.5281/zenodo.4556285},
    note = {R package version 0.3.0},
    url = {https://CRAN.R-project.org/package=eirm},
  }

  @Article{,
    author = {Okan Bulut and Guher Gorgun and Seyma Nur
      Yildirim-Erbasli},
    title = {Estimating explanatory extensions of dichotomous and
      polytomous Rasch models: The eirm package in R},
    journal = {Psych},
    year = {2021},
    volume = {3},
    number = {3},
    pages = {308-321},
    doi = {10.3390/psych3030023},
  }

  @Article{,
    author = {Luke Stanke and Okan Bulut},
    title = {Explanatory item response models for polytomous item
      responses},
    journal = {International Journal of Assessment Tools in Education},
    year = {2019},
    volume = {6},
    number = {2},
    pages = {259-278},
    doi = {10.21449/ijate.515085},
  }