Emerson Ribeiro de Mello, Michelle Silva Wangham, Samuel Bristot Loli, Carlos da Silva, and Gabriela Cavalcante da Silva. 2018.
 Autenticação multi-fator em provedores de identidade Shibboleth. In <em>Proceedings of the 18th Brazilian Symposium on Information and Computational Systems Security</em>, October 25, 2018, Natal, Brasil. SBC, Porto Alegre, Brasil, 85-98. DOI: <a href="https://doi.org/10.5753/sbseg.2018.4245">https://doi.org/10.5753/sbseg.2018.4245</a>.