CATTANEO, Matias D.; JANSSON, Michael; MA, Xinwei. lpdensity: Local Polynomial Density Estimation and Inference. Journal of Statistical Software, [S. l.], v. 101, n. 2, p. 1–25, 2022. DOI: 10.18637/jss.v101.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v101i02. Acesso em: 16 mar. 2025.