Local extrema in genus-stratified graphs. - Jonathan L. Gross; Robert G. Rieper (J. Graph Theory, 1991)

On the average genus of a graph. - Jonathan L. Gross; E. Ward Klein; Robert G. Rieper (Graphs Comb., 1993)

Overlap matrices and total imbedding distributions. - Jianer Chen; Jonathan L. Gross; Robert G. Rieper (Discret. Math., 1994)

Lower bounds for the average genus. - Jianer Chen; Jonathan L. Gross; Robert G. Rieper (J. Graph Theory, 1995)

Counting Methods. - Jay Yellen; Edward W. Packel; Robert G. Rieper; George E. Andrews; Alan C. Tucker; Edward A. Bender; Bruce E. Sagan (Handbook of Discrete and Combinatorial Mathematics, 1999)

Continued Fractions and Catalan Problems. - Mahendra Jani; Robert G. Rieper (Electron. J. Comb., 2000)

Skew Diagrams and Ordered Trees. - Robert G. Rieper; Melkamu Zeleke (Adv. Appl. Math., 2001)