A Numerical Algorithm for Identifying Spread Functions of Shift-Invariant Imaging Systems. - Michael P. Ekstrom (IEEE Trans. Computers, 1973)

Digital image processing at Lawrence Livermore Laboratory part I - Diagnostic radiography applications. - Michael P. Ekstrom (Computer, 1974)

A Monte Carlo approach to numerical deconvolution. - Michael P. Ekstrom (ICASSP, 1976)

An Extension of Eklundh's Matrix Transposition Algorithm and Its Application in Digital Image Processing. - Richard E. Twogood; Michael P. Ekstrom (IEEE Trans. Computers, 1976)

Design of stable 2-D half-plane recursive filters using spectral factorization. - Michael P. Ekstrom; Richard E. Twogood; John W. Woods (ICASSP, 1978)

Why filter recursively in two dimensions? - Richard E. Twogood; Michael P. Ekstrom (ICASSP, 1979)