A. Lopes, P. Gondim, and J. Lloret.
" Mutual Authentication Protocol for Cloud-based E-health Systems", in <em>Companion Proceedings of the 18th Brazilian Symposium on Information and Computational Systems Security</em>, Natal, 2018, pp. 81-94, doi: <a href="https://doi.org/10.5753/sbseg_estendido.2018.4145">https://doi.org/10.5753/sbseg_estendido.2018.4145</a>.