M. Coutinho, I. Passos, R. Sousa Jr., and F. Borges.
" Improving the Security of ChaCha against Differential-Linear Cryptanalysis", in <em>Proceedings of the 20th Brazilian Symposium on Information and Computational Systems Security</em>, Petrópolis, 2020, pp. 15-28, doi: <a href="https://doi.org/10.5753/sbseg.2020.19224">https://doi.org/10.5753/sbseg.2020.19224</a>.