The Riordan group. - Louis W. Shapiro; Seyoum Getu; Wen-Jin Woan; Leon C. Woodson (Discret. Appl. Math., 1991)

How to Guess a Generating Function. - Seyoum Getu; Louis W. Shapiro; Wen-Jin Woan; Leon C. Woodson (SIAM J. Discret. Math., 1992)

The Double Riordan Group. - Dennis E. Davenport; Louis W. Shapiro; Leon C. Woodson (Electron. J. Comb., 2011)

The Boundary of Ordered Trees. - Dennis E. Davenport; Louis W. Shapiro; Lara K. Pudwell; Leon C. Woodson (J. Integer Seq., 2015)

A Bijection Between the Triangulations of Convex Polygons and Ordered Trees. - Dennis E. Davenport; Louis W. Shapiro; Leon C. Woodson (Integers, 2020)