14/15 PSI - Differential Geormetry-4

          @misc{ scivideos_PIRSA:14080035,
            doi = {},
            url = {https://pirsa.org/14080035},
            author = {Johnson, Matthew},
            keywords = {},
            language = {en},
            title = {14/15 PSI - Differential Geormetry-4},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2014},
            month = {aug},
            note = {PIRSA:14080035 see, \url{https://scivideos.org/pirsa/14080035}}
          }