B. do Rêgo, F. Garrido, J. Rosa, and E. Matos.
" Communicability problems on MOOCs: a study around metacommunication", in <em>Proceedings of the 30th Brazilian Symposium on Computers in Education</em>, Brasília/DF, 2019, pp. 1261-1270, doi: <a href="https://doi.org/10.5753/cbie.sbie.2019.1261">https://doi.org/10.5753/cbie.sbie.2019.1261</a>.