Quantum Field Theory - Lecture 2A

          @misc{ scivideos_PIRSA:12100005,
            doi = {},
            url = {https://pirsa.org/12100005},
            author = {Zarembo, Konstantin},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Quantum Field Theory - Lecture 2A},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2012},
            month = {oct},
            note = {PIRSA:12100005 see, \url{https://scivideos.org/index.php/pirsa/12100005}}
          }