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

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

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