- Aditya K. Ghose, Jennifer Horkoff, Vítor E. Silva Souza, Jeffrey Parsons, Joerg Evermann, editors, Conceptual Modeling - 40th International Conference, ER 2021, Virtual Event, October 18-21, 2021, Proceedings. Volume 13011 of Lecture Notes in Computer Science, Springer, 2021.
- Roman Lukyanenko, Binny M. Samuel, Arnon Sturm, editors, Proceedings of the ER Demos and Posters 2021 co-located with 40th International Conference on Conceptual Modeling (ER 2021), St. John's, NL, Canada, October 18-21, 2021. Volume 2958 of CEUR Workshop Proceedings, CEUR-WS.org, 2021.
- Iris Reinhartz-Berger, Shazia W. Sadiq, editors, Advances in Conceptual Modeling - ER 2021 Workshops CoMoNoS, EmpER, CMLS, St. John's, NL, Canada, October 18-21, 2021, Proceedings. Volume 13012 of Lecture Notes in Computer Science, Springer, 2021.