FITZSIMMONS, Z.; HEMASPAANDRA, E.; HOOVER, A.; NARVÁEZ, D. E. Very Hard Electoral Control Problems. Proceedings of the AAAI Conference on Artificial Intelligence, [S. l.], v. 33, n. 01, p. 1933-1940, 2019. DOI: 10.1609/aaai.v33i01.33011933. Disponível em: https://ojs.aaai.org/index.php/AAAI/article/view/4021. Acesso em: 27 nov. 2021.