String Theory (Review) - Lecture 1

          @misc{ pirsa_PIRSA:12020047,
            doi = {},
            url = {https://pirsa.org/12020047},
            author = {Cachazo, Freddy},
            keywords = {Quantum Gravity, Quantum Fields and Strings},
            language = {en},
            title = {String Theory (Review) - Lecture 1},
            publisher = {Perimeter Institute},
            year = {2012},
            month = {feb},
            note = {PIRSA:12020047 see, \url{https://pirsa.org}}
          }