1. ‘Optical theory of the corner reflector’, MIT Rad. Lab. Report, ATI-5783, 1944
2. ‘Theory and software development for the accurate prediction of the scattering cross-section patterns of modified corner reflectors’, Keith M. Keen & Associates Final Report, KMK/FR.RCS-82 under ESTEC Contract 4947/81/NL/MS, December, 1982