Alternating Permutations and Binary Increasing Trees. - Robert Donaghey (J. Comb. Theory A, 1975)

Binomial Self-Inverse Sequences and Tangent Coefficients. - Robert Donaghey (J. Comb. Theory A, 1976)

Restricted plane tree representations of four Motzkin-Catalan equations. - Robert Donaghey (J. Comb. Theory B, 1977)

Motzkin Numbers. - Robert Donaghey; Louis W. Shapiro (J. Comb. Theory A, 1977)

Two Transformations of Series That Commute with Compositional Inversion. - Robert Donaghey (J. Comb. Theory A, 1979)

A Combinatorial Interpretation for Two Transformations of Series that Commute with Compositional Inversion. - Robert Donaghey (J. Comb. Theory A, 1980)

Automorphisms on Catalan trees and bracketings. - Robert Donaghey (J. Comb. Theory B, 1980)