On the Congruence xx ≡ x (mod n). - James M. Hammer; Joshua Harrington; Lenny Jones (Integers, 2016)

Factor pair latin squares. - James M. Hammer; Dean Hoffman (Australas. J Comb., 2017)

Decomposition of a Complete Bipartite Multigraph into Arbitrary Cycle Sizes. - John Asplund; Joe Chaffee; James M. Hammer (Graphs Comb., 2017)

Graph polynomials for a class of DI-pathological graphs. - James M. Hammer; Joshua Harrington (AKCE Int. J. Graphs Comb., 2020)

A regional Kronecker product and multiple-pair latin squares. - Braxton Carrigan; James M. Hammer; John Lorch (Discret. Math., 2020)

List colorings count rokudoku-pair squares. - Braxton Carrigan; James M. Hammer; John Lorch; Robert Lorch; Caitlin Owens (Bull. ICA, 2021)

On the domination number of permutation graphs and an application to strong fixed points. - Theresa Baren; Michael Cory; Mia Friedberg; Peter Gardner 003; James M. Hammer; Joshua Harrington; Daniel McGinnis; Riley Waechter; Tony W. H. Wong (Discret. Appl. Math., 2021)

Constructing $(3, b)$-Sudoku pair Latin squares. - Braxton Carrigan; David Diaz; James M. Hammer; John Lorch; Robert Lorch (Australas. J Comb., 2022)

Diagonal cellular factor pair Latin squares. - James M. Hammer; John Lorch (Des. Codes Cryptogr., 2023)