Structural Information and Communication Complexity 26th International Colloquium, SIROCCO 2019, L'Aquila, Italy, July 1-4, 2019, Proceedings - Censor-Hillel, Keren; Censor-Hillel, Keren; Flammini, Michele; Flammini, Michele (Springer International Publishing : Imprint: Springer, 2019)