STAF-WS 2021: STAF 2021 workshop proceedings
: STAF 2021 workshop proceedings: 9th International Workshop on Bidirectional Transformations, Joint Workshop on Foundations and Practice of Visual Modeling and Data for Model-Driven Engineering, International Workshop on MDE for Smart IoT Systems, 4th International Workshop on (Meta)Modeling for Healthcare Systems, and 20th International Workshop on OCL and Textual Modeling : co-located with Software Technologies: Applications and Foundations, Federation of Conferences (STAF 2021) : Bergen, Norway, June 21-25, 2021