Coordination Models and Languages 21st IFIP WG 6.1 International Conference, COORDINATION 2019, Held as Part of the 14th International Federated Conference on Distributed Computing Techniques, DisCoTec 2019, Kongens Lyngby, Denmark, June 17-21, 2019, Proceedings - Riis Nielson, Hanne; Riis Nielson, Hanne; Tuosto, Emilio; Tuosto, Emilio (Springer International Publishing : Imprint: Springer, 2019)