- João Pimentel 0001, Juan Pablo Carvallo 0001, Lidia López, editors, Proceedings of the 12th International i* Workshop co-located with 38th International Conference on Conceptual Modeling (ER 2019), Salvador, Brazil, November 4th, 2019. Volume 2490 of CEUR Workshop Proceedings, CEUR-WS.org, 2019.