Perez Alonso, Andres F., Jeroen K. Vermunt, Yves Rosseel, and Kim De Roover. “Selecting the Number of Clusters in Mixture Multigroup Structural Equation Modeling”. Methodology 21, no. 1 (March 31, 2025): Article e14931. Accessed May 7, 2026. https://meth.psychopen.eu/index.php/meth/article/view/14931.