Recursion Relations

          @misc{ pirsa_PIRSA:11080011,
            doi = {10.48660/11080011},
            url = {https://pirsa.org/11080011},
            author = {Bourjaily, Jacob},
            keywords = {},
            language = {en},
            title = {Recursion Relations},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {aug},
            note = {PIRSA:11080011 see, \url{https://pirsa.org}}
          }