Francis J. Kub, Gordon Wood Anderson, Nicolas A. Papanicolaou, John A. Modolo, Rebecca L. Grant, Douglas E. Brown, "GaAs/AlGaAs/GaAs Heterojunction Photoconductor Array For Programmable Frequency Excision And Adaptive Filtering," Proc. SPIE 1102, Optical Technology for Microwave Applications IV, (14 August 1989);