Time-delocalized quantum subsystems and operations: on the existence of processes with indefinite causal structure in quantum mechanics. - Ognyan Oreshkov (Quantum, 2019)

The Multi-round Process Matrix. - Timothée Hoffreumon; Ognyan Oreshkov (Quantum, 2021)

Proceedings of the 22nd International Conference on Quantum Physics and Logic. - Alejandro Díaz-Caro; Ognyan Oreshkov; Ana Belén Sainz (CoRR, 2025)