Doubly General Relativity

          @misc{ pirsa_PIRSA:12050059,
            doi = {10.48660/12050059},
            url = {https://pirsa.org/12050059},
            author = {Koslowski, Tim},
            keywords = {},
            language = {en},
            title = {Doubly General Relativity},
            publisher = {Perimeter Institute},
            year = {2012},
            month = {may},
            note = {PIRSA:12050059 see, \url{https://pirsa.org}}
          }