Discussion: 2nd Order

          @misc{ scivideos_PIRSA:21060049,
            doi = {10.48660/21060049},
            url = {https://pirsa.org/21060049},
            author = {Pound, Adam},
            keywords = {},
            language = {en},
            title = {Discussion:  2nd Order},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2021},
            month = {jun},
            note = {PIRSA:21060049 see, \url{https://scivideos.org/pirsa/21060049}}
          }