Mixed domain filtering of multidimensional signals. - Knud Steven Knudsen; Leonard T. Bruton (IEEE Trans. Circuits Syst. Video Technol., 1991)

Moving object detection and trajectory estimation in the transform/spatiotemporal mixed domain. - Knud Steven Knudsen; Leonard T. Bruton (ICASSP, 1992)

Recursive pruning of the 2D DFT with 3D signal processing applications. - Knud Steven Knudsen; Leonard T. Bruton (IEEE Trans. Signal Process., 1993)