@article{levine:1948:tda,
    author = {Levine, Harold and Schwinger, Julian},
     title = {On the theory of diffraction by an aperture in an infinite
              plane screen. {I}},
   journal = {Phys. Rev.},
    volume = {74},
    number = {8},
      year = {1948},
     pages = {958–974},
   mrclass = {78.0X},
  mrnumber = {MR0026920 (10,221h)},
mrreviewer = {C. J. Bouwkamp},
       doi = {10.1103/PhysRev.74.958},
     zblno = {0032.23103}}