Gravitational Physics (Review) - Lecture 1

          @misc{ pirsa_PIRSA:12010066,
            doi = {},
            url = {https://pirsa.org/12010066},
            author = {Gregory, Ruth},
            keywords = {},
            language = {en},
            title = {Gravitational Physics (Review) - Lecture 1},
            publisher = {Perimeter Institute},
            year = {2012},
            month = {jan},
            note = {PIRSA:12010066 see, \url{https://pirsa.org}}
          }