Discussion Session 4

          @misc{ pirsa_PIRSA:21060125,
            doi = {10.48660/21060125},
            url = {https://pirsa.org/21060125},
            author = {},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Discussion Session 4},
            publisher = {Perimeter Institute},
            year = {2021},
            month = {jun},
            note = {PIRSA:21060125 see, \url{https://pirsa.org}}
          }