PSI 2015/2016 - Relativity - Lecture 4

          @misc{ scivideos_PIRSA:15090031,
            doi = {},
            url = {https://pirsa.org/15090031},
            author = {Turok, Neil},
            keywords = {},
            language = {en},
            title = {PSI 2015/2016 - Relativity - Lecture 4},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2015},
            month = {sep},
            note = {PIRSA:15090031 see, \url{https://scivideos.org/pirsa/15090031}}
          }