12/13 PSI - Quantum Gravity Review Lecture 8

          @misc{ pirsa_PIRSA:13020049,
            doi = {},
            url = {https://pirsa.org/13020049},
            author = {Dittrich, Bianca},
            keywords = {Quantum Gravity},
            language = {en},
            title = {12/13 PSI - Quantum Gravity Review Lecture 8},
            publisher = {Perimeter Institute},
            year = {2013},
            month = {feb},
            note = {PIRSA:13020049 see, \url{https://pirsa.org}}
          }