Quantum Mechanics with real clocks and rods

          @misc{ scivideos_PIRSA:07060044,
            doi = {10.48660/07060044},
            url = {https://pirsa.org/07060044},
            author = {Gambini, Rodolfo},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Quantum Mechanics with real clocks and rods},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2007},
            month = {jun},
            note = {PIRSA:07060044 see, \url{https://scivideos.org/pirsa/07060044}}
          }