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Cockrell, C. R.; and Beck F. B.: Note on Use of Slope Diffraction Coefficients for Aperture Antennas on Finite Ground Plane. NASA TM-110192, 1995.
C.R.Cockrell and F.B.Beck, "Note on use of slope diffraction coefficients for aperture antennas on finite ground planes," NASA Technical Memorandum 110192, August 1995.