AMATH 875/PHYS 786 - Fall 2015 - Lecture 21

          @misc{ pirsa_PIRSA:15110004,
            doi = {},
            url = {https://pirsa.org/15110004},
            author = {Kempf, Achim},
            keywords = {},
            language = {en},
            title = {AMATH 875/PHYS 786 - Fall 2015 - Lecture 21},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {nov},
            note = {PIRSA:15110004 see, \url{https://pirsa.org}}
          }