12/13 PSI - Gravitational Physics Review Lecture 5

          @misc{ pirsa_PIRSA:13020059,
            doi = {},
            url = {https://pirsa.org/13020059},
            author = {Gregory, Ruth},
            keywords = {Strong Gravity},
            language = {en},
            title = {12/13 PSI - Gravitational Physics Review Lecture 5},
            publisher = {Perimeter Institute},
            year = {2013},
            month = {feb},
            note = {PIRSA:13020059 see, \url{https://pirsa.org}}
          }