Quasilocal mass in general relativity

          @misc{ pirsa_PIRSA:15050138,
            doi = {10.48660/15050138},
            url = {https://pirsa.org/15050138},
            author = {Yau, Shing-Tung},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Quasilocal mass in general relativity},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {may},
            note = {PIRSA:15050138 see, \url{https://pirsa.org}}
          }