1.
De Boeck P, Partchev I. IRTrees: Tree-Based Item Response Models of the GLMM Family. J. Stat. Soft. [Internet]. 2012 May 24 [cited 2021 Nov. 28];48(1):1-28. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v048c01