Grad Talks 4

          @misc{ scivideos_PIRSA:09030023,
            doi = {},
            url = {https://pirsa.org/09030023},
            author = {Zhang, Lucy Liuxuan},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Grad Talks 4},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {mar},
            note = {PIRSA:09030023 see, \url{https://scivideos.org/index.php/pirsa/09030023}}
          }