NAGLER, T. kdecopula: An R Package for the Kernel Estimation of Bivariate Copula Densities. Journal of Statistical Software, [S. l.], v. 84, n. 7, p. 1–22, 2018. DOI: 10.18637/jss.v084.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v084i07. Acesso em: 3 feb. 2023.