To cite package ‘irtbem2pl’ in publications use: Legorreta Torres J (2026). _irtbem2pl: Marginalized Bayesian Item Parameter Estimation, 2pl Model IRT_. R package version 1.0.0, . A BibTeX entry for LaTeX users is @Manual{, title = {irtbem2pl: Marginalized Bayesian Item Parameter Estimation, 2pl Model IRT}, author = {Juan Luis {Legorreta Torres}}, year = {2026}, note = {R package version 1.0.0}, url = {https://github.com/juanluislegorretatorres/irtbem2pl}, }