Filipe, J., Smialek, M., Brodsky, A., & Hammoudi, S. [2021]. ICEIS 2021: Proceedings of the 23rd International Conference on Enterprise Information Systems : online streaming, April 26-28, 2021. [Setúbal, Portugal]: SCITEPRESS - Science and Technology Publications, Lda.

ICEIS 2021 : Proceedings of the 23rd International Conference on Enterprise Information Systems : online streaming, April 26-28, 2021 / sponsored by INSTICC - Institute for Systems and Technologies of Information, Control and Communication ; edited by Joaquim Filipe, Michal Smialek, Alexander Brodsky and Slimane Hammoudi . — [Setúbal, Portugal] : SCITEPRESS - Science and Technology Publications, Lda, [2021]. — ISBN 9789897585098

Filipe, Joaquim, Michal Smialek, Alexander Brodsky, and Slimane Hammoudi. ICEIS 2021: Proceedings of the 23rd International Conference On Enterprise Information Systems : Online Streaming, April 26-28, 2021.[Setúbal, Portugal]: SCITEPRESS - Science and Technology Publications, Lda, [2021].