BIRGIN, Ernesto G.; MARTÍNEZ, Jose Mario; RAYDAN, Marcos. Spectral Projected Gradient Methods: Review and Perspectives. Journal of Statistical Software, [S. l.], v. 60, n. 3, p. 1–21, 2014. DOI: 10.18637/jss.v060.i03. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v060i03. Acesso em: 31 mar. 2025.