Quantum gravity without Lorentz invariance

          @misc{ scivideos_PIRSA:09110057,
            doi = {10.48660/09110057},
            url = {https://pirsa.org/09110057},
            author = {Weinfurtner, Silke},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Quantum gravity without Lorentz invariance},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2009},
            month = {nov},
            note = {PIRSA:09110057 see, \url{https://scivideos.org/pirsa/09110057}}
          }