Explorations in Quantum Gravity - Lecture 7

          @misc{ scivideos_PIRSA:12040028,
            doi = {},
            url = {https://pirsa.org/12040028},
            author = {Rovelli, Carlo},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Explorations in Quantum Gravity - Lecture 7},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2012},
            month = {apr},
            note = {PIRSA:12040028 see, \url{https://scivideos.org/pirsa/12040028}}
          }