PSI 2015/2016 - String Theory - Lecture 4

          @misc{ scivideos_PIRSA:16020038,
            doi = {},
            url = {https://pirsa.org/16020038},
            author = {Gaiotto, Davide},
            keywords = {},
            language = {en},
            title = {PSI 2015/2016 - String Theory - Lecture 4},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2016},
            month = {feb},
            note = {PIRSA:16020038 see, \url{https://scivideos.org/index.php/pirsa/16020038}}
          }