Tendeiro, Jorge N., Rob R. Meijer, and A. Susan M. Niessen. “PerFit: An R Package for Person-Fit Analysis in IRT”. Journal of Statistical Software 74, no. 5 (October 20, 2016): 1–27. Accessed November 24, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v074i05.