SÄFKEN, B.; RÜGAMER, D.; KNEIB, T.; GREVEN, S. Conditional Model Selection in Mixed-Effects Models with cAIC4. Journal of Statistical Software, [S. l.], v. 99, n. 8, p. 1–30, 2021. DOI: 10.18637/jss.v099.i08. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v099i08. Acesso em: 26 oct. 2021.