PSI 2017/2018 - Quantum Gravity - Lecture 12

          @misc{ pirsa_PIRSA:18040009,
            doi = {},
            url = {https://pirsa.org/18040009},
            author = {Dupuis, Ma{\"\i}t{\'e}},
            keywords = {Quantum Gravity},
            language = {en},
            title = {PSI 2017/2018 - Quantum Gravity - Lecture 12},
            publisher = {Perimeter Institute},
            year = {2018},
            month = {apr},
            note = {PIRSA:18040009 see, \url{https://pirsa.org}}
          }