Ambient Intelligence – Software and Applications –, 9th International Symposium on Ambient Intelligence - Novais, Paulo 1967-; Jung, Jason J.; Villarrubia González, Gabriel; Fernández-Caballero, Antonio 1961-; Navarro, Elena; González, Pascual; Carneiro, Davide; Pinto, António; Campbell, Andrew T.; Durães, Dalila (Springer, 2019)