Free Discussion

          @misc{ pirsa_PIRSA:14060013,
            doi = {10.48660/14060013},
            url = {https://pirsa.org/14060013},
            author = {},
            keywords = {},
            language = {en},
            title = {Free Discussion},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {jun},
            note = {PIRSA:14060013 see, \url{https://pirsa.org}}
          }