Relativity - Lecture 221108

          @misc{ pirsa_PIRSA:22110027,
            doi = {},
            url = {https://pirsa.org/22110027},
            author = {Riello, Aldo},
            keywords = {},
            language = {en},
            title = {Relativity - Lecture 221108},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {nov},
            note = {PIRSA:22110027 see, \url{https://pirsa.org}}
          }