UMBACH, N.; NAUMANN, K.; BRANDT, H.; KELAVA, A. Fitting Nonlinear Structural Equation Models in R with Package nlsem. Journal of Statistical Software, [S. l.], v. 77, n. 7, p. 1–20, 2017. DOI: 10.18637/jss.v077.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v077i07. Acesso em: 18 apr. 2024.