MÍNGUEZ, R.; LÓPEZ, F. A.; MUR, J. spsur: An R Package for Dealing with Spatial Seemingly Unrelated Regression Models. Journal of Statistical Software, [S. l.], v. 104, n. 1, p. 1–43, 2022. DOI: 10.18637/jss.v104.i11. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v104i11. Acesso em: 10 dec. 2022.