12/13 PSI - String Theory Review Lecture 9

          @misc{ scivideos_PIRSA:13010057,
            doi = {},
            url = {https://pirsa.org/13010057},
            author = {Zwiebach, Barton},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {12/13 PSI - String Theory Review Lecture 9},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {jan},
            note = {PIRSA:13010057 see, \url{https://scivideos.org/pirsa/13010057}}
          }