M. Silva, J. Viterbo, F. Bernardini, and C. Maciel. " Privacy Requirements for Crowdsourcing Applications in the Smart City Context", in Companion Proceedings of the 18th Brazilian Symposium on Human Factors in Computing Systems, Vitória, 2019, pp. 186-187, doi: https://doi.org/10.5753/ihc.2019.8432.