Information Loss

          @misc{ scivideos_PIRSA:15080025,
            doi = {10.48660/15080025},
            url = {https://pirsa.org/15080025},
            author = {Wald, Robert},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Information Loss},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2015},
            month = {aug},
            note = {PIRSA:15080025 see, \url{https://scivideos.org/index.php/pirsa/15080025}}
          }