Efficient autocorrelation estimation using relative magnitudes. - Mark C. Sullivan (IEEE Trans. Acoust. Speech Signal Process., 1989)

A Signed Maximum Correlation Multiplier for LMS Filter Adaptation. - Mark C. Sullivan (IEEE Trans. Signal Process., 1993)

Direction finding and "smart antennas" using software radio architectures. - Joseph Kennedy; Mark C. Sullivan (IEEE Commun. Mag., 1995)

Correlation estimators based on simple nonlinear transformations. - Mark C. Sullivan; Edward J. Wegman (IEEE Trans. Signal Process., 1995)

Estimating spectral correlations with simple nonlinear transformations. - Mark C. Sullivan; Edward J. Wegman (IEEE Trans. Signal Process., 1995)

A normalized correlation estimator for complex data based on a quadruplex transformation. - Mark C. Sullivan; Edward J. Wegman (IEEE Signal Process. Lett., 1997)