Enterprise, business-process and information systems modeling 20th International Conference, BPMDS 2019, 24th International Conference, EMMSAD 2019, held at CAiSE 2019, Rome, Italy, June 3-4, 2019 : proceedings - Reinhartz-Berger, Iris; Zdravkovic, Jelena ca. 20./21. Jh; Gulden, Jens 1974-; Schmidt, Rainer (Lecture Notes in Business Information Processing, 2019)