Asymptotic probability of error using two decision-directed estimators for two unknown mean vectors (Corresp.). - Edward A. Patrick; Joseph Peter Costello (IEEE Trans. Inf. Theory, 1968)

Decision-Directed Estimation of a Two-Class Decision Boundary. - Edward A. Patrick; Joseph Peter Costello; Fabian C. Monds (IEEE Trans. Computers, 1970)

On unsupervised estimation algorithms. - Edward A. Patrick; Joseph Peter Costello (IEEE Trans. Inf. Theory, 1970)

On the number of points in regular discrete simplex (Corresp.). - Joseph Peter Costello (IEEE Trans. Inf. Theory, 1971)

Unsupervised estimation of signals with intersymbol interference (Corresp.). - Joseph Peter Costello; Edward A. Patrick (IEEE Trans. Inf. Theory, 1971)