Singularities in String Theory

          @misc{ scivideos_PIRSA:05100043,
            doi = {},
            url = {https://pirsa.org/05100043},
            author = {Horowitz, Gary},
            keywords = {},
            language = {en},
            title = {Singularities in String Theory},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2005},
            month = {oct},
            note = {PIRSA:05100043 see, \url{https://scivideos.org/pirsa/05100043}}
          }