Operational General Relativity - Lecture 1

          @misc{ scivideos_PIRSA:17100074,
            doi = {},
            url = {https://pirsa.org/17100074},
            author = {Hardy, Lucien},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Operational General Relativity - Lecture 1},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {oct},
            note = {PIRSA:17100074 see, \url{https://scivideos.org/index.php/pirsa/17100074}}
          }