Scattering Amplitudes and the Positive Grassmannian

          @misc{ scivideos_strings:20121017,
            doi = {},
            url = {https://cast.itunes.uni-muenchen.de/clips/ifNaivs8Pf/vod/high_quality.mp4},
            author = {},
            keywords = {},
            language = {en},
            title = {Scattering Amplitudes and the Positive Grassmannian},
            publisher = {},
            year = {1970},
            month = {jan},
            note = {strings:20121017 see, \url{https://scivideos.org/strings-conferences/20121017}}
          }