Molenaar, Dylan, Francis Tuerlinckx, and Han L. J. van der Maas. “Fitting Diffusion Item Response Theory Models for Responses and Response Times Using the R Package DiffIRT”. Journal of Statistical Software 66, no. 4 (August 27, 2015): 1–34. Accessed June 30, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v066i04.