Alexander Hauptmann 0001 João Magalhães Ricardo Gamelas Sousa Carlos Santigo MuCAI'21: Proceedings of the 2nd ACM Multimedia Workshop on Multimodal Conversational AI, Virtual Event, China, 20 October 2021 ACM MuCAI @ ACM Multimedia 2021 978-1-4503-8679-1 https://doi.org/10.1145/3475959 db/conf/mm/mucai2021.html