Type I and II supersymmetric backgrounds

          @misc{ scivideos_strings:20071029,
            doi = {},
            url = {https://scivideos.org/strings-conferences/20071029},
            author = {},
            keywords = {},
            language = {en},
            title = {Type I and II supersymmetric backgrounds},
            publisher = {},
            year = {},
            month = {},
            note = {strings:20071029 see, \url{https://scivideos.org/strings-conferences/20071029}}
          }