BRAUN, M. sparseHessianFD: An R Package for Estimating Sparse Hessian Matrices. Journal of Statistical Software, [S. l.], v. 82, n. 10, p. 1–22, 2017. DOI: 10.18637/jss.v082.i10. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v082i10. Acesso em: 18 apr. 2024.