Juan Aznar-Poveda, Stefan Pedratscher, Peter Burger, Abolfazl Younesi, Marlon Etheredge, Zahra Najafabadi Samani, Peter Thoman, Thomas Fahringer: FedGuard: Leader-Aware Fault-Tolerant Federated Learning in the Cloud-Edge Continuum. UCC 2025: 46:1-46:6