The application of a systolic least squares processing array to adaptive beamforming. - John G. McWhirter; C. R. Ward; Andrew J. Robson; P. J. Hargrave (ICASSP, 1984)

The application of linear constraints to an adaptive beamformer. - John G. McWhirter; T. J. Shepherd; C. R. Ward; R. A. Jones; P. J. Hargrave (ICASSP, 1986)