Rodrigo Laiola Guimarães, Celso Alberto Saibel Santos, Vagner Figuerêdo de Santana, Artur Henrique Kronbauer: Proceedings of the 18th Brazilian Symposium on Human Factors in Computing Systems, IHC 2019, Vitoria, ES, Brazil, October 22-25, 2019. ACM 2019, ISBN 978-1-4503-6971-8