Fajgelj, S. and Janičić, B. 2008. KakaoBEJZ: Macro for item analysis of dichotomously scored items - item response theory. Primenjena psihologija. 1, 3-4 (Dec. 2008), 223–241. DOI:https://doi.org/10.19090/pp.2008.3-4.223-241.