Spin Foams - 2

          @misc{ scivideos_PIRSA:13070045,
            doi = {10.48660/13070045},
            url = {https://pirsa.org/13070045},
            author = {Immirzi, Giorgio and Mikovic, Aleksander and Hnybida, Jeff and Wieland, Wolfgang},
            keywords = {},
            language = {en},
            title = {Spin Foams - 2},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {jul},
            note = {PIRSA:13070045 see, \url{https://scivideos.org/pirsa/13070045}}
          }