N. Oikonomou, N. Mengidis, M. Spanopoulos-Karalexidis, A. Voulgaridis, M. Merialdo, I. Raisr, K. Hanson, P. de La Vallee, T. Tsikrika, S. Vrochidis and K. Votis, “ECHO Federated Cyber Range: Towards Next-Generation Scalable Cyber Ranges“, in the proceedings of the 2021 IEEE International Conference on Cyber Security and Resilience (IEEE CSR) – Workshops, Virtual Conference, Virtual, July 26 – 28, 2021.