Knowledge-based adaptive signal processing. - Yu Hen Hu; Ali Hussein Abdallah (ICASSP, 1987)

Subspace approximation based algorithms for adaptive high resolution spectrum estimate. - Yu Hen Hu; Pin-Kuan Chou; Ali Hussein Abdallah (ICASSP, 1987)

Parallel VLSI computing array implementation for signal subspace updating algorithm. - Ali Hussein Abdallah; Yu Hen Hu (IEEE Trans. Acoust. Speech Signal Process., 1989)