FRICK, H.; STROBL, C.; LEISCH, F.; ZEILEIS, A. Flexible Rasch Mixture Models with Package psychomix. Journal of Statistical Software, [S. l.], v. 48, n. 7, p. 1–25, 2012. DOI: 10.18637/jss.v048.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v048i07. Acesso em: 8 aug. 2022.